The Church of St. Joseph is part of the Monastery of St. Voršila on Orlí Street. It was built in the middle of the 17th century, despite the reservations of the town council to this plan on the grounds that there were already fourteen beautiful churches in the town and its surroundings and little space for the houses of the townspeople.
After the monastery was expropriated in 1945, it was completely restored for the purposes of the Technical Museum, but after 1989 the monastery was returned to the Order of St. The crypt of the Church of St. Joseph was made accessible by its second entrance (the first entrance is under the floor of the church) from the courtyard of the monastery in 1994. It was discovered during the removal of the outdoor exhibition when a crane drove onto the hidden passageway and broke its ceiling.
After the crypt was opened, it was discovered that the remains of the nuns, deposited along the perimeter of the walls in shafts 2.5 m deep, had been disturbed and disarranged, probably during the robbery. This was evidenced by the discovery of a small tin coffin with the headless torso of the remains of a woman about 120-130 cm tall. It was a lily of noble birth, placed by her parents in the monastery. The skeleton was dressed in a sumptuous pink dress with lace in a surprisingly well-preserved condition. On the lid of the coffin was painted a richly decorated coat of arms. After an exhumation in 1995, the remains of a total of one hundred and sixty nuns were reverently buried in the central cemetery. The other remains, placed under the brick pavement of the crypt, were left in situ.
The square space of the crypt, vaulted with a heavily compressed brick vault, is very well ventilated and in excellent technical condition. At the head of the crypt, between the two entrances, there is a stone plaque on the wall with the text.