The church can be visited
Katharinen Church

St. Catherine's Church in Salzwedel, in the northwest of Saxony-Anhalt, is an example of Romanesque origin, shaped by Brick Gothic architecture. As the parish church of the Neustadt district, it is dedicated to St. Catherine.
History+
The founding of Salzwedel's Neustadt district in 1247 laid the foundation for the construction of St. Catherine's Church, whose documented beginning of construction dates back to 1280. In the early 14th century, the church underwent its first extensions, including the erection of a choir on the east side, which rose above the nave. Around 1450, the entire church was raised to this height and provided with a vault. Further alterations followed in 1460, and in 1467, the Corpus Christi Chapel was completed. A two-story sacristy extension on the south side and the renewal of the spire shaped its current appearance. From this period also originate three of the originally nine stained-glass windows in the choir, depicting biblical scenes. After the Reformation, the congregation became Evangelical-Lutheran. A lightning strike in 1644 led to the burning of the spire. In the 19th century, the main altar was sold to Frankfurt Cathedral and replaced in 1981 by the Unicorn Altar from Dambeck.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://commons.wikimedia.org/wiki/File:Salzwedel_Katharinenkirche.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: 52.8557, 11.1558