Late Gothic Chapel originally built in 1368 and reconstructed in 1510, on the north side of the churchyard. Later used for preserving the skeletons from the surrounding cemetery. (The cemetery was too small to cope with the number of deaths in the 30 Year War and the various plagues.)  The chapel was later misused for profane purposes.  At the beginning of the 20th century alterations were carried out to the attic roof.  Since its restoration in 1982, the building has housed the city archives.