1125 17th Street (formerly known as the Bank One Tower) is a 363 ft (111 m) tall skyscraper in Denver, Colorado.

It was completed in 1980 and has 25 floors, making it the 29th tallest building in Denver.

[1] The building was designed by the prolific architecture firm Skidmore, Owings & Merrill.

The building was formerly known as the Bank One Tower, and in even earlier times, the Amoco Building, since Standard Oil once leased a significant part of the building.

[2] Now, according to the building's web site, the building's current name is simply its address, 1125 17th Street.