A set of two 36-story towers in downtown Houston, Texas was designed by Philip Johnson and John Burgee and built in 1975, Pennzoil Place is one of Houston's most award-winning skyscraper and is widely known for its innovative design.

The buildings consists of two 495 foot trapezoidal towers placed ten feet apart and sheathed in dark bronze glass and aluminum. The buildings are mirror images of each other and the entire street-level plaza joining the two structures is enclosed in a 115 foot glass pyramid-shaped atrium. Deliberately designed as an optical illusion, Pennzoil Place's appearance will vary depending on the different locations from where it is viewed.