Mar-a-Lago is an estate and National Historic Landmark in Palm Beach, Florida, built from 1924 to 1927 by cereal-company heiress and socialite Marjorie Merriweather Post. The 126-room, 110,000-square-foot house contains the Mar-a-Lago Club, a members-only club with guest rooms, a spa, and other hotel-style amenities. At the time of her death in 1973, Post bequeathed the property to the National Park Service, hoping it could be used for state visits or as a Winter White House.