Obertor, the „upper gate“, closes the end of market square/street towards the hills. It is a picturesque gate tower crrowned with a high pyramidal roof. The tower originates from the 13th century but was damaged in 1689 and rebuilt afterwards. The inner side has the city's coat of arms painted on it, the black eagle and the small inescutcheon with the silver fish on red ground. Above there is a sundial. The arched passage has a portcullis, probably a replica, on the outside.