Comcast Technology Center

The Comcast Technology Center is a "supertall" skyscraper in Center City, Philadelphia. The 60-floor building, with a height of 1,121 feet (342 m), is the tallest building in Philadelphia and the Commonwealth of Pennsylvania, the fourteenth-tallest building in the United States and the tallest outside Manhattan and Chicago.

The tower is located on the southwest corner of 18th and Arch Streets, one block west of the Comcast Center, the headquarters of Comcast Corporation. A hotel—the highest in the country and restaurant are located on the top floors, while central floors contain offices for Comcast software developers and engineers, and the lowest floors have television studios and retail stores.

Construction began in mid-2014 and topped out on November 27, 2017. The first personnel began moving into the building in late July 2018 and the tower was open to the public in October of that year.

The lead architect was Foster and Partners, with Kendall/Heaton Associates the collaborating architect, and interior design by Gensler with Foster and Partners in collaboration. The L.F. Driscoll Company was the construction contractor. The tower contains approximately 1.566 million rentable square feet, including 1.334 million rentable square feet of office space, 230,112 square feet of hotel space, and 2,682 rentable square feet of retail space.

A set of five tuned sloshing dampers containing 125,000 gallons of water are located in the ceiling of the 57th floor, beneath the hotel lobby. The moving water is a counteracting force on windy days to reduce swaying of the upper part of the tower. A-shaped steel braces are embedded between hotel rooms on the east and west sides, to stiffen the upper part of the building against strong, prevailing winds. More details