Ramparts of Quebec City

Québec City boasts the last remaining city walls in North America, in large part thanks to the British, who began fortifying them after claiming the city in the wake of the Battle of the Plains of Abraham. Named a National Historic Site in 1948, the walls enclose most of Old Québec, and feature four remaining gates. A fun way to experience the fortification—and get a new perspective on the city—is to walk on top of the walls, which are nearly 3 miles in length.