The Steinerner Steg or “Roman Bridge” is the oldest bridge over the River Passer and was was built in the 17th century. It is situated where the winter and summer promenades end, and where the Gilfpromenade begins. This, and replaced a medieval wooden structure that linked Obermais to the city centre. Its original function was to carry the drinking water pipeline from one side of the river to the other. The Steinerner Steg is often also erroneously called the “Roman Bridge”, probably on account of its apparently Roman/ancient construction method.