One Liberty Observation Deck

--- Permanently Closed --- Unofficially called Philly From The Top, it is 883 feet high, giving a 360 degree of Philadelphia. It opened in 2015 and has been a popular attraction ever since, rivaling observation decks in NYC, Las Vegas, and Boston. Although the building is easily viewable from the street, the deck itself might be closed until further notice. Check the website for updates.