Fort Frederick (Kingston, Ontario) - Credit: Wikimedia Commons
Fort Frederick is a historic military building located on Point Frederick on the grounds of the Royal Military College of Canada (RMC) in Kingston, Ontario, Canada. Its construction dates to 1846 and the Oregon boundary dispute. The fort consists of earthworks surrounding a Martello tower. Fort Frederick is included in two separate National Historic Sites of Canada: Kingston Fortifications National Historic Site and the Point Frederick Buildings National Historic Site.Kingston Fortifications, Directory of Designations of National Historic Significance of Canada Read more on Wikipedia
Source: en.wikipedia.org