Make sure you have enough gas in the tank, because Cologne is worth a detour. Situated 35 miles from Schleiden, it offers up a few fabulous attractions, such as Cologne Cathedral and RheinEnergieStadion. Get set to start racking up those miles, because Borussia Park and Rheydt Castle are also worth a day trip. You’ll find these well-known sights in Moenchengladbach, 45 miles away.