BOK Tower

BOK Tower is a 52-story skyscraper in downtown Tulsa that stood as Oklahoma’s tallest building from its completion in 1976 until 2011. Originally known as One Williams Center and later renamed for the Bank of Oklahoma, it was designed by Minoru Yamasaki and closely modeled on World Trade Center Tower 1 after John Williams sought a Tulsa version of that design. The project evolved from plans for two 30-story replicas into one taller tower, giving Tulsa a half-scale interpretation of a Twin Tower. With about 1.1 million square feet of office space, rapid occupancy, and later repairs after a 2005 flood, it became a defining business landmark.

Tulsa, Oklahoma · United States