Nobody identifies the North American continent with noble residences that the Old World calls castles or palaces. Historically many forts were built in Americas by French, English, and Spanish, but those were rather fortresses, used by military forces. Luxurious homes of noble and rich people in USA and Canada are called mansions. The best examples were modeled after famous European buildings to resemble a French palace or Scottish castle for example. In many cases such structures are very impressive and were erected with attention to every detail. Castles in America are not fortified, but exactly as medieval prototypes they may have secret passageways, turret rooms and even dungeons. On the other hand many American mansions because of its architectural styles, ornaments and decorated interiors fully deserve to be called palace.