Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Waldorf Astoria Hotel & Residences Philadelphia - Waldorf Astoria Hotel & Residences Philadelphia was a proposed skyscraper in the city of Philadelphia Pennsylvania. It was to be built in the former One Meridian Plaza lot half of which is now occupied by The Residences at The Ritz-Carlton. The project comprised a 670 feet (200 m)/58 floor tower located at 1441 Chestnut Street and was to be completed by Waldorf Astoria Philadelphia by the year 2012.
A:
Building