It was originally built by the Tennessee Gas Transmission Company for its Houston headquarters,[1] and was known as the Tenneco Building.

Because of downtown Houston's diagonal street grid, all four sides of the building are exposed to the sun.

An elevator or an escalator were required to get to the main lobby of the building because it was raised above the street level.

A very long stock ticker was installed to deliver messages and add to the visual appeal in 1996 when the El Paso Corporation bought Tenneco for 4 billion dollars.

EP Energy (formerly El Paso E&P Company) leases floors 18-27 from Kinder Morgan.