If you’re up for more adventure, keep on cruising to Cologne, 40 miles from Adenau. You’ll find plenty more fabulous things to see and do here, including Cologne Cathedral and RheinEnergieStadion. Nothing says living big like a road trip does, so keep on driving to Düsseldorf. It’s 60 miles away and also offers a few appealing sights, such as Rhine Tower and Duesseldorf City Hall.