Rossfurth mit Elbtor

In the Middle Ages, the Rossfurt was the only way from the harbor directly into and through the city. Since the city center is located about 15m above the Elbe water level, the traded goods had to be laboriously transported by horse and cart via a 120m long, steep sunken road. The beginning of the sunken path was protected by the defense tower. This was important because the rivers were the "highways of the Middle Ages". Even a relatively small town like Tangermünde was not sufficiently cared for by railroads before the time of the railroads and could only develop on a river like the Elbe.
stadtfuehrung-tangermuende.de/sehensw%C3%BCrdigkeiten

The Rossfurth is surrounded by high lining walls about 100 m long hollow way, which leads from the Elbtor to the city. Until the last century, it was the only access to the city from the Elbe side. The Elbtor was built in the 15th century. On the left side of the archway is a bar with the highest water levels of the past centuries.
Source: https: //tangermuende.de