Houston - The fourth largest city in the United States with an estimated population of 2.14 million within an area of 600 square miles - was founded in 1836 and named after then-President of the Republic of Texas - former General Sam Houston.

Houston is considered as the world's energy capital. It is also 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.