El Castillo was built in 1928 by famed architect Addison Mizner. The estate was built for steel broker John F. Harris.
The estate is currently owned by Palm Beach attorney and former pitcher for the Texas Rangers, Milwaukee Brewers, Chicago Cubs and Oakland Athletics, Peter S. Broberg.
http://curbed.com/archives/2013/12/13/historic-el-castillo-estate-in-palm-beach-asks-264m.php
https://www.floridabarndominium.us/