BOK Tower, formerly One Williams Center, is a skyscraper in downtown Tulsa, Oklahoma.

The similarities between the BOK Tower and the World Trade Center Towers are based upon the building's history.

The construction of the BOK Tower is the same as was used for the Trade Center Towers.

As of August 2006, BOK Tower is undergoing $16 million in repairs and renovations.

The corporate headquarters is located in the BOK Tower in downtown Tulsa.

The following year, BOK began moving its headquarters employees into the new BOK Tower.

It currently stands as the 2nd-tallest international style skyscraper in the city, behind the BOK Tower.

It currently stands as the 3rd-tallest international style skyscraper in the city, behind the BOK Tower and the Bank of America Center.

The most notable feature of this project is the BOK Tower (originally named One Williams Center).

The BOK moved to its newly-constructed BOK Tower in 1977.