Three Logan Square, formerly known as the Bell Atlantic Tower, is a 55-story skyscraper located in Philadelphia, Pennsylvania.

Standing 739 ft (225 m) tall to its structural top, the building encloses 1,300,000 square feet (120,000 m2) of office space.

The building, designed by the Philadelphia-based architecture firm Kling Lindquist, was completed in 1991.

A landscaped plaza, constructed of the same red granite as the building, occupies the rest of the plot, fulfilling a city requirement that 1% of the total budget for new building construction must go toward a work of public art.

The building had been offered for sale in the past,[1] and on August 5, 2010, it was sold to Brandywine Realty Trust.