The church can be visited
Rottenburg Cathedral

St. Martin's Cathedral in Rottenburg am Neckar is the cathedral church of the Diocese of Rottenburg-Stuttgart. Its history dates back to the 13th century, and it has an unusual floor plan and a delicate spire, which serves as a landmark of the city.
History+
Around 1280, an early Gothic Chapel of Our Lady was built on this site. The actual parish church at that time was the Church of St. Martin in the village of Sülchen. From 1424, a Gothic city parish church replaced the market chapel and adopted the patronage of St. Martin from the Sülchen church. This three-aisled basilica had to consider the street layout during its construction, resulting in an irregular floor plan. The Romanesque tower base remained and still protrudes into the choir today. Simultaneously, the late Gothic, openwork spire was created. A city fire in 1644 necessitated reconstruction, which was completed with the church consecration in 1655.
Source: Wikipedia · Licence: CC BY-SA 4.0
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: 48.4774, 8.9343