A UNESCO World Heritage Site, the Historic District of Old Québec is encircled by 4.6 km of fortifications, making Québec City the only fortified city north of Mexico. As guardians of the fortifications, Parks Canada invites you to discover this jewel in many ways. Learn about the city's history as you tour the fortifications with a guide. From the Dufferin Terrace at Artillery Park, you'll discover how the fortifications have been preserved over time and access superb vantage points and unique sites. At Artillery Park, guides and characters in period costumes open the doors to the social and military history of the 18th to 20th centuries. Visit the Dauphine Redoubt, one of the oldest military buildings in North America. For an ideal family activity, set off on an adventure along the fortifications to unravel the mystery of The Legend of the Talking Walls.