Walter E. Scott was a con man and gold prospector who convinced a Chicago couple, Albert and Bessie Johnson, to build this 1922 Spanish-style castle in Death Valley National Park, California.
Iolani Palace is the only official royal residence located in the United States and is located in downtown Honolulu, Hawaii.
Francis Bannerman VI, a Scottish-born owner of a military surplus supply company, built this castle in 1901.
Newspaper mogul William Randolph Hearst built this Julia Morgan-designed castle in San Simeon, California, to serve as his private residence.
In 1900, the owner of New York's Waldorf Astoria Hotel, George C. Boldt, built this 120-room castle for his wife, Louise, on an island in the St. Lawrence River in Alexandria, New York.
Henry Chapman Mercer, an archaeologist, artifact collector, and tilemaker, built this beauty in Doylestown, Pennsylvania, from 1908 to 1912.
After George Vanderbilt visited the Blue Ridge Mountains near Asheville, North Carolina, in 1898, he fell in love with the area and built this estate.
This Newport, Rhode Island, estate was also built by a Vanderbilt (this time Cornelius Vanderbilt II) and designed by architect Richard Morris Hunt in the late 19th century.