The tallest building in Philly, the Comcast Technology Center towers 1,121 feet (342m) above the city, housing workspaces, a Four Seasons Hotel and a restaurant on its top floors. Famed British architect Norman Foster personally accepted the job, saying that no one had ever tried to build a tech tower in the heart of a city, and he wanted to take on the challenge. Completed in 2018, there are no conventional offices in the building. Instead, it’s all about open areas with noise dampening technology, conference rooms and standing desks.