Dundurn Castle

Southwestern Ontario

Delightful and unexpected, this column-fronted, 36-room mansion once belonged to Sir Allan Napier McNab, Canadian prime minister from 1854 to 1856. It sits on a cliff overlooking the harbor amid lovely chestnut-studded grounds and is furnished in mid-19th-century style. Castle admission includes a one-hour tour (every 30 minutes) and entry into the on-site Hamilton Military Museum, which focuses on the War of 1812.

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