Expedia is your one-stop shop for booking every aspect of your vacation. Find the perfect car rental to visit Berlin Dungeon, then add hotels and flights to score an incredible deal. Many car rental outlets include free cancellation, so there's no need to stress if your plans change. Make sure you join our free travel rewards program, One Key™, to earn OneKeyCash™* on your car rental and other eligible bookings. This can help you save on your next exciting adventure, whether that's a city getaway or a 1,609-kilometer road trip! *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.