Best Houston Tours from Houston

This Southeast Texas metropolis is the fourth most populous city in the United States having more than six million people. Houston was established in 1836 and named after Republic of Texas president Sam Houston. Its nicknames include "Space City," "H-Town," "Bayou City" and "Magnolia City." Popular attractions are NASA's Johnson Space Center, the Houston Museum District, Theater District, Gerald D. Hines Waterwall Park, Houston Arboretum and Nature Center, Houston City Hall, University of Houston, Houston Zoo, Downtown Aquarium and the Galleria.