The owners of Anam Cara Castle in Rochester, New Hampshire host educational tours of their '10th century fortified Clan chieftan's home'.
educational
Dundas Castle, Roscoe, New York is a substantial, gothic-style, stone mansion with castle-like elements such as circular towers, conical roofs & crenellations.
Boston University Castle (BU Castle), Boston, Massachusetts is a medieval style mansion owned by Boston University.
Samuel Cupples House, St Louis, Missouri is a castle-like, Romanesque style mansion owned by St Louis University since 1946.
Hazard Castle, Narragansett, Rhode Island is a neo-gothic landmark built in the 1800s and now home to Middlebridge School.
The Castle at Maryvale (also Wickcliffe Castle) in Lutherville, Maryland is a wedding venue which principally serves as part of the Maryvale School campus.
The Arts Castle, Delaware, Ohio (aka Delaware County Cultural Arts Center) is a grassroots, non-profit arts organization
Cornwall Castle, Cornwall, Connecticut is a well-known private residence offering cooking classes to guests.
Westminster Castle (aka The Pillar of Fire), Westminster, Colorado is now part of the Belleview Christian School campus.
Montezuma Castle, Las Vegas, New Mexico is part of the UWC‑USA campus and offers various facilities to its students.