The Gate can be visited
Town Fortification Stralsund-Küter Gate

The Kütertor is one of the former city gates of the Hanseatic city of Stralsund; it was one of the land gates of the Stralsund city fortifications. Together with the Kniepertor, it is the last remaining city gate of Stralsund.
The gate, located on the land side of the city on the Strelasund, was first mentioned in a document in 1281. It is located at the end of Heilgeiststraße towards Knieperwall or Küterdamm. It gets its name from the Küter, who were butchers who processed the offal of animals (Küt).
In 1446, the Kütertor, which can still be seen today, was rebuilt. It is 10.30 meters wide and 10.40 meters deep. Until 1862, the gate was used as a prison, later converted for residential purposes. From 1963 to 2003, it was part of a youth hostel, alongside the Wasserkunst and the water tower.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: https://commons.wikimedia.org/wiki/File:Stralsund_K%C3%BCtertor.jpg
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 54.3138, 13.0865