Three Logan Square, formerly 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 of office space. The building, designed by the Philadelphia-based architecture firm Kling Lindquist, was completed in 1991. A city ordinance dictates that no building within of the nearby Benjamin Franklin Parkway may rise taller than ; the tower stands just outside this zone. 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. A banquet hall, known as Top of the Tower, occupies the top floor of the building and is available for public rentals. It was the headquarters for Philadelphia-based Baby Bell Bell Atlantic until 1996, when Bell Atlantic acquired New York City-based NYNEX and moved its headquarters to New York. In 2000, Bell Atlantic and GTE merged to become Verizon and the "Bell Atlantic" name became obsolete. However, the building's managers kept the original name, mainly because of the difficulties in getting all necessary parties to agree to change it. The building had been offered for sale in the past, and on August 5, 2010, it was sold to Brandywine Realty Trust. The company has since renamed the tower Three Logan Square, to better identify its location near two other Brandywine-owned buildings, One and Two Logan Square. Tenants CDI Corporation Comcast Cable Reed Smith Excelacom Inc Janney Montgomery Scott, LLC Warner Bros. Digital Labs Kleinbard Verizon Marsh & McLennan Companies L2P See also List of tallest buildings in Philadelphia List of tallest buildings in Pennsylvania List of tallest buildings in the United States List of skyscrapers List of towers External links Top of the Tower Listing at Emporis References Skyscraper office buildings in Philadelphia Verizon Communications Center City, Philadelphia 1991 establishments in Pennsylvania Office buildings completed in 1991