Houston seen from below is nothing special, but Houston seen from above is spectacular! And for once, you can really go from one extreme to another in downtown Houston: you can go from the underground tunnels beneath the city center to the top floor of one of its skyscrapers. You can freely enter the JP Morgan Chase Tower, the tallest building in Texas. Up there awaits a partial view of Houston. Other buildings are also available to visit, offering views from another angle.