instruction: When was Mar-a-Lago built?
context: Mar-a-Lago was built for businesswoman and socialite Marjorie Merriweather Post, former owner of General Foods Corporation, between the years 1924 to 1927. 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, but because the costs of maintaining the property exceeded the funds provided by Post, and because it was difficult to secure the facility (as it is located in the flight path of Palm Beach Airport), the property was returned to the Post Foundation by an act of Congress in 1981.
response: Mar-a-Lago was built between the years 1924 to 1927.