Bayou. Houston was incorporated on June 5, 1837 and named after then-President of the Republic of Texas-former General Sam Houston-who had commanded at the Battle of San Jacinto, which took place 25 miles (40 km) east of where the city was established. The burgeoning port and railroad industry, combined with oil discovery in 1901, has induced continual surges in the city's population. In the mid-twentieth century, Houston became the home of the Texas Medical Center-the world's largest concentration of healthcare and research institutions-and NASA's Johnson Space Center, where Mission Control Center is located.

Houston's economy has a broad industrial base in the energy, manufacturing, aeronautics, and technology; only New York City is home to more Fortune 500 headquarters. The Port of Houston ranks first in the United States in international waterborne tonnage handled and second in total cargo tonnage handled. The city has a multicultural population with a large and growing international community. As a gamma world city, it is home to many cultural institutions and exhibits-attracting more than 7 million visitors a year to the Houston Museum District. Houston has an active visual and performing arts scene in the Theater District and is one of five U.S. cities that offer year-round resident companies in all major performing arts.

Climate
Houston's climate is classified as humid subtropical (Cfa in Köppen climate classification system). Spring supercell thunderstorms sometimes bring tornadoes to the area. Prevailing winds are from the south and southwest during most of the year, bringing heat across the continent from the deserts of Mexico and moisture from the Gulf of Mexico.

During the summer months, it is common for the temperature to reach over 90 °F (32 °C), with an average of 99 days per year above 90 °F (32 °C). However, the humidity results in a heat index higher than the actual temperature. Summer mornings average over 90 percent relative humidity and approximately 60 percent in the afternoon. Winds are often light in the summer and offer little relief, except near the immediate coast, To cope with the heat, people use air conditioning in nearly every vehicle and building in the city; in fact, in 1980 Houston was described as the "most air-conditioned place on earth". Scattered afternoon thunderstorms are common in the summer. The hottest temperature ever recorded in Houston was 109 °F (43 °C) on September 4, 2000.

Winters in Houston are fairly temperate. The average high in January, the coldest month, is 63 °F (17 °C), while the average low is 45 °F (7 °C). Snowfall is generally rare. The last snowstorm to hit Houston was on December 24, 2004. The coldest temperature ever recorded in Houston was 5 °F (-15 °C) on January 23, 1940.

Economy
Houston's energy industry is recognized worldwide—particularly for oil—and biomedical research, aeronautics, and the ship channel are also large parts of its economic base. The area is a leading center for building oilfield equipment. Much of Houston's success as a petrochemical complex is due to its busy man-made ship channel, the Port of Houston. The port ranks first in the United States in international commerce, and is the tenth-largest port in the world. Unlike most places, where high oil and gasoline prices are seen as harmful to the economy, they are generally seen as beneficial for Houston as many are employed in the energy industry.

The Houston–Sugar Land–Baytown MSA's Gross Area Product (GAP) in 2006 was $325.5 billion, slightly larger than Austria’s, Poland’s or Saudi Arabia’s Gross Domestic Product (GDP). When comparing Houston's economy to a national economy, only 21 countries other than the United States have a gross domestic product exceeding Houston's regional gross area product. Mining, which in Houston is almost entirely exploration and production of oil and gas, accounts for 11% of Houston's GAP; this is down from 21% in 1985. The reduced role of oil and gas in Houston's GAP reflects the rapid growth of other sectors, such as engineering services, health services, and manufacturing.

Houston ranks second in employment growth rate and fourth in nominal employment growth among the 10 most populous metro areas in the U.S. In 2006, the Houston metropolitan area ranked first in Texas and third in the U.S. within the category of "Best Places for Business and Careers" by Forbes magazine. Forty foreign governments maintain trade and commercial offices here and the city has 23 active foreign chambers of commerce and trade associations. Twenty foreign banks representing 10 nations operate in Houston, providing financial assistance to the international community.

Demographics
Houston is a diverse and international city, in part because of its many academic institutions and strong industries. Over 90 languages are spoken in the city. Houston has among the youngest populations in the nation, partly due to an influx of immigrants into Texas. The city has the third-largest Hispanic and third-largest Mexican population in the United States. An estimated 400,000 illegal immigrants reside in Houston.

As of the census of 2000, there were 1,953,631 people and the population density was 3,371.7 people per square mile (1,301.8/km²). The racial makeup of the city was 49.27 percent White, 25.31 percent Black, 0.44 percent American Indian, 5.31 percent Asian, 0.06 percent Pacific Islander, 16.46 percent from some other race, and 3.15 percent from two or more races. Persons of Hispanic origin—who may be of any race—accounted for 37 percent of the population.

Houston has a large population of immigrants from Asia, including the largest Vietnamese American population in Texas and third-largest in the United States. Some parts of the city with high populations of Vietnamese and Chinese residents have Chinese and Vietnamese street signs, in addition to English ones. Houston has two Chinatowns: the original located in Downtown, and the more recent one north of Bellaire Boulevard in the southwest area of the city. The city has a Little Saigon in Midtown and Vietnamese businesses located in the southwest Houston Chinatown.

Houston has a large gay community concentrated primarily in Neartown and Houston Heights. It is estimated that the Houston metropolitan area has the twelfth-largest number of lesbian, gay and bisexual individuals in the United States.

Attractions
Houston is a multicultural city with a large and growing international community. The Houston MSA is home to an estimated 1.1 million (21.4 percent) residents that were born outside the United States, with nearly two-thirds of the Houston MSA foreign-born population are from south of the US-Mexico border. More than one in five foreign born Houstonians are from Asia. The city is home to the nation’s third largest concentration of consular offices representing 86 nations. Houston is designated as a gamma world city by the Globalization and World Cities Study Group and Network. Houston received the official nickname of "Space City" in 1967 because it is home to NASA's Lyndon B. Johnson Space Center. Other nicknames include "H-Town," "Screwston," "The Big Heart," "Bayou City," "Clutch City," "Hustletown," and "Magnolia City." The city is home to Lakewood Church, the largest church in America with over 50,000 members attending each week.

Houston has an active visual and performing arts scene. The Theater District is located downtown and is home to nine major performing arts organizations and six performance halls. It is the second largest concentration of theater seats in a downtown area in the United States. Houston is one of only five United States cities with permanent, professional, resident companies in all major performing arts disciplines: opera (Houston Grand Opera), ballet (Houston Ballet), music (Houston Symphony Orchestra), and theater (The Alley Theatre). Houston is also home to many local folk artists, art groups and various smaller progressive arts organizations. Houston attracts many touring Broadway acts, concerts, shows, and exhibitions for a variety of interests.

Houston is home to the Bayou City Art Festival, which is considered to be one of the top five art festivals in the United States.

The Museum District is home to many popular cultural institutions and exhibits, attracting more than 7 million visitors a year. Notable facilities located in the district include The Museum of Fine Arts, Houston Museum of Natural Science, the Contemporary Arts Museum Houston, Holocaust Museum Houston, and the Houston Zoo. Located in the nearby Montrose area are The Menil Collection and Rothko Chapel.

Many venues scattered across Houston regularly host local and touring rock, blues, country, hip hop and Tejano musical acts. Unfortunately, there has never been a widely renowned music scene in Houston. Artists seem to relocate to other parts of the United States once attaining some level of success. A notable exception to the rule is Houston hip-hop, which celebrates the unique southern flavor and attitude of its roots. This has given rise to a strong, independent hip-hop music scene, influencing and influenced by the larger Southern hip hop and gangsta rap communities. Many Houstonian hip-hop artists have attained commercial success.

Many annual events celebrate the diverse cultures of Houston. The largest and longest running is the annual Houston Livestock Show and Rodeo, held over 20 days from late February to early March. Another large celebration is the annual night-time Houston Pride Parade, held at the end of June. Other annual events include the Houston Greek Festival, Art Car Parade, the Houston Auto Show and the Houston International Festival.Space Center Houston is the official visitors’ center of NASA's Lyndon B. Johnson Space Center. Here one will find many interactive exhibits including moon rocks, a shuttle simulator, and presentations about the history of NASA's manned space flight program.

The Theater District is a 17-block area in the center of downtown Houston that is home to the Bayou Place entertainment complex, restaurants, movies, plazas, and parks. Bayou Place is a large multilevel building containing full-service restaurants, bars, live music, billiards, and art house films. The Houston Verizon Wireless Theater stages live concerts, stage plays, and stand-up comedy; and the Angelika Film Center presents the latest in art and foreign and independent films.

Houston is home to many parks including Hermann Park, which houses the Houston Zoo and the Houston Museum of Natural Science, Lake Houston Park, Memorial Park, Tranquility Park, Sesquicentennial Park and Sam Houston Park which contains restored and reconstructed homes which were originally built between 1823 and 1905). The city has 337 city parks and over 200 green spaces—totaling over 19,600 acres (79 km²) that are managed by the city—including the Houston Arboretum and Nature Center. The Houston Civic Center was replaced by the George R. Brown Convention Center—one of the nation's largest—and the Jesse H. Jones Hall for the Performing Arts, home of the Houston Symphony Orchestra and Society for the Performing Arts. The Sam Houston Coliseum and Music Hall have been replaced by the Hobby Center for the Performing Arts.

Other tourist attractions include the Galleria (Texas's largest shopping mall located in the Uptown District), Old Market Square, the Downtown Aquarium, SplashTown and Sam Houston Race Park. The San Jacinto Battleground State Historic Site where the decisive battle of the Texas Revolution was fought is located on the Houston Ship channel east of the city; the park is also the location of the museum battleship USS Texas (BB-35).

Sports
Houston has teams for nearly every major professional sport. The Houston Astros (MLB), Houston Texans (NFL), Houston Rockets (NBA), Houston Comets (WNBA), Houston Aeros (AHL), Houston Wranglers (WTT), Houston Takers (ABA), Houston Dynamo (MLS), and the Houston Energy (WPFL) all call Houston home.

Minute Maid Park (home of the Astros) and Toyota Center (home of the Rockets, Comets, and Aeros) are located in a revived area of downtown. The city has the Reliant Astrodome, the first domed stadium in the world; it also holds the NFL's first retractable-roof stadium, Reliant Stadium. Other sports facilities in Houston include Hofheinz Pavilion and Robertson Stadium (both used for University of Houston collegiate sports), and Rice Stadium (home of the Rice University Owls football team). The infrequently used Reliant Astrodome hosted World Wrestling Entertainment's WrestleMania X-Seven on April 1, 2001, where an attendance record of 67,925 was set.

Houston has hosted major recent sporting events, including the 2004 Major League Baseball All-Star Game, the 2000 IHL All-Star Game, the 2005 World Series, the 2005 Big 12 Conference football championship game, the 2006 NBA All-Star Game, the U.S. Men's Clay Court Championships from 2001–2006, and the Tennis Masters Cup in 2003 and 2004, as well as the annual Shell Houston Open golf tournament. The city hosts the annual NCAA College Baseball Minute Maid Classic every February and NCAA football's Texas Bowl in December. Houston has hosted the Super Bowl championship game twice. Super Bowl VIII was played at Rice Stadium in 1974 and Super Bowl XXXVIII was played at Reliant Stadium in 2004. In early 2006, the Champ Car auto racing series returned to Houston for a yearly race, held on the streets of the Reliant Park complex.

Education
There are more than 55 colleges and universities and dozens of institutions engaged in research and development in Houston.

The city is the home to Rice University, one of the leading teaching and research universities of the United States and ranked the nation's 17th-best overall university by U.S. News & World Report. The University of Houston ("UH") is Texas's third-largest public research university with more than 36,000 students from 130 countries, making it one of the most diverse campuses in the country. UH is the only comprehensive doctoral degree-granting research institution in East Texas with more than 40 research centers and institutes. Other public institutions of higher learning in the city include University of Houston–Clear Lake ("UHCL"), University of Houston–Downtown ("UHD"), and Texas Southern University ("TSU"). Additionally, several private institutions include University of St. Thomas and Houston Baptist University. The Houston Community College System serves most of Houston and is the fourth-largest community college system in the United States.

Houston is home to two of four public law schools in Texas: University of Houston Law Center and Thurgood Marshall School of Law. The University of Houston Law Center ranked in at No. 60 of the "Top 100 Law Schools" in 2007 by U.S. News & World Report. Additionally, South Texas College of Law—a private institution—is the city's oldest law school founded in 1923 and has one of the nation's top programs for trial advocacy.

There are 16 school districts serving the city. The Houston Independent School District (HISD) is the seventh-largest in the United States. HISD has 112 campuses that serve as magnet or vanguard schools—specializing in such disciplines as health professions, visual and performing arts, and the sciences. There are also many charter schools that are run separately from school districts. In addition, some public school districts also have their own charter schools.

The Houston area is home to more than 300 private schools, many of which are accredited by Texas Private School Accreditation Commission (TEPSAC) recognized agencies. The Houston Area Independent Schools, or HAIS, offer education from a variety of different religious as well as secular viewpoints. The Houston area Catholic schools are operated by the Archdiocese of Galveston-Houston.

Transportation
Houston’s freeway system is made up of 575.5 miles (926.2 km) of freeways and expressways in a 10-county metro area. Its highway system uses a hub-and-spoke freeway structure serviced by multiple loops. The innermost loop is Interstate 610, which encircles downtown, the medical center, and many core neighborhoods with around a 10 mile (16 km) diameter. Beltway 8 and its freeway core, the Sam Houston Tollway, form the middle loop at a diameter of roughly 25 miles (40 km). A proposed highway project, State Highway 99 (The Grand Parkway), would form a third loop outside of Houston. Currently, the completed portion of State Highway 99 runs from just north of Interstate 10, west of Houston, to U.S. Highway 59 in Sugar Land, southwest of Houston, and was completed in 1994.

Houston also lies along the route of the proposed Interstate 69 NAFTA superhighway that would link Canada, the U.S. industrial Midwest, Texas, and Mexico. Other spoke freeways either planned or under construction include the Fort Bend Parkway, Hardy Toll Road, Crosby Freeway, and the future Alvin Freeway.

The Metropolitan Transit Authority of Harris County, Texas, or METRO, provides public transportation in the form of buses, light rail, and lift vans. METRO's various forms of public transportation still do not connect many of the suburbs to the greater city, causing Houstonians to rely on the automobile as a primary source of transportation.

METRO began light rail service on January 1, 2004. The inaugural track ("Red Line") runs about 8 miles (13 km) from the University of Houston–Downtown ("UHD"), which traverses through the Texas Medical Center and terminates at Reliant Park. METRO is currently in the design phase of a 10-year expansion plan that will add five more lines to the existing system.

Amtrak, the national rail passenger system, provides service to Houston via the Sunset Limited (Los Angeles–New Orleans), which stops at a train station on the north side of the downtown area. The station saw 10,855 boardings and alightings in fiscal year 2006.

Houston is served by two commercial airports. The larger is George Bush Intercontinental Airport (IAH), the ninth-busiest in the United States for total passengers, and seventeenth-busiest worldwide. Bush Intercontinental currently ranks third in the United States for non-stop domestic and international service with 182 destinations. In 2006, the United States Department of Transportation named George Bush Intercontinental Airport the fastest-growing of the top ten airports in the United States. Houston is the headquarters of Continental Airlines and Bush Intercontinental is Continental Airlines' largest hub. The airline offers more than 700 daily departures from Houston. In early 2007, Bush Intercontinental Airport was named a model "port of entry" for international travelers by U.S. Customs and Border Protection.

The second-largest commercial airport in Houston is William P. Hobby Airport (named Houston International Airport until 1967). The airport operates primarily small to medium-haul flights and is the only airport in Houston served by Southwest Airlines and JetBlue Airways. Houston's aviation history is showcased in the 1940 Air Terminal Museum located in the old terminal building on the west side of Hobby Airport.

The third-largest airport is Ellington Field, a former U.S. Air Force base, used by military, commercial, government and general aviation sectors.

The Federal Aviation Administration and the state of Texas selected the "Houston Airport System as Airport of the Year" for 2005, largely because of its multi-year, $3.1 billion airport improvement program for both major airports in Houston.