If you’re on the hunt for an appealing detour, point your car in the direction of Belfast. It’s home to terrific attractions like Titanic Belfast and Belfast Castle. To get there, travel 20 miles from Cairncastle. Get set to start clocking up those miles, because Derry City Walls and Museum of Free Derry and Bloody Sunday Memorial are also a rewarding day trip. You’ll discover these fine sights in Londonderry, 60 miles away.