In the 1760s it was earl Antal Grassalkovich who had the baroque building built as a rest-house in which now the museum works. The four permanent exhibitions present the image how the aboriginal Reformed farmers living near the castle, the Catholic workers settled in the 18th century, the Israelite merchants arriving in the middle of the 19th century, and the artists who settled here in the time of the Dualism shaped, enriched the picture of the town.