Charnel house was built in the second half of the fifteenth century, as a morgue near the parish church. The back wall was originally linked with the fortifications of the city. At the beginning of the 16th century, the upper part was built, which after the church fire in 1528, served as a chapel and served as a place of worship until the temple was repaired. In 1560, as a result of the Turkish threat, it was transformed into an arsenal. Later the building was abandoned, and after reconstruction in 1973-1988 it was handed over to the Trenčín Museum.
Charnel house is a small, gothic, two-level building on a rectangular plan. It has four pointed windows with tracery and an entrance portal from the south-east side. The upper level interior is topped with a rib vault.
Website muzeumtn.sk, Karner sv. Michala.