The church can be visited
Marien Church

St. Mary's Church (Marienkirche) in Salzwedel, located in northwestern Saxony-Anhalt, is an example of North German Brick Gothic architecture. As the largest church in the city, it shapes the cityscape. Its history dates back to the 12th century.
History+
The origins of St. Mary's Church lie in a Romanesque fieldstone church, built around 1150. After 1200, this structure was demolished, with only a round tower stump remaining. Subsequently, a three-aisled brick basilica with a cruciform plan was erected. In the mid-14th century, a Gothic-style reconstruction began, expanding the church into a five-aisled basilica, a process that spanned over two centuries. The tower received a new spire, reaching a height of over 80 meters. The church was adapted and furnished, including a carved wooden altar around 1510 and a bronze baptismal font from 1522.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://commons.wikimedia.org/wiki/File:Marienkirche_von_Norden.jpg?uselang=de
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: 52.8494, 11.1491