Please answer the following question: Equitable Trust Building - The Equitable Trust Building or Broad and Locust Building is a 21-story skyscraper three blocks south of Philadelphia City Hall designed by Horace Trumbauer. Trumbauer designed the building in 1925 after completing a similarly styled residential building the Chateau Crillon Apartment House on Rittenhouse Square for the owner of the Equitable Trust Company Louis Cahan.The building was listed on the National Register of Historic Places in 1986. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
A:
Building