One Dallas Center is now owned by Todd Interests and houses the headquarters of HKS Inc., Greyhound, and Apex Clearing Corporation.

The third phase would have consisted of a 400-unit luxury apartment complex across Harwood Street, on land now occupied by the Sheraton Dallas Hotel convention facility.

[1] During construction on October 11, 1978, a crane fell 27 stories from the roof and crashed to the ground, killing a worker, injuring others, and punching several holes in the side of the tower.

[2] It changed ownership again during the 1990s as nearby development made the building more attractive; adjacent Bryan Street was closed to auto traffic for DART's St. Paul Station, which opened in 1996.

[4] Street sign announcing the construction and leasing information of the tower was shown in opening scene of season 1 episode 3 of Dallas in 1978.

The two triangular notches on the sides of One Dallas Center create added interest and provide four additional corner offices on each floor.

It included one 1.7 million-square-foot office building (twin hexagonal towers joined at the 16th and 23rd floors) and a separate 500-room hotel with semi-circular windows on four sides.