Castillo de San Marcos National Monument (United States) 1 S Castillo Dr, Saint Augustine Beach, Saint Augustine, FL 32084-3252
Hearst Castle (United States) 750 Hearst Castle Road, San Simeon, CA 93452-9740
Pythian Castle (United States) 1451 E Pythian St, Springfield, MO 65802-2137
Castle Williams (United States) Governors Island New York Harbor, New York, NY
Castle Gallery (United States) 1202 W Wayne St, Fort Wayne, IN 46802-5937
Baranof Castle State Historical Site (United States) Corner of Harbor Road and Lincoln St., Sitka, AK
Castle Farms (United States) 5052 M 66 N, Charlevoix, MI 49720-8519
The Castle on Stagecoach (United States) 6601 Stagecoach Rd, Little Rock, AR 72204-8756
Quigley's Castle (United States) 274 Quigley Castle Rd, Eureka Springs, AR 72632-9144
Rhodes Memorial Hall (United States) 1516 Peachtree St NW, Atlanta, GA 30309-2908