The current chapel, dedicated to the Immaculate Conception of the Blessed Virgin Mary, was built in 1729 as a palace chapel by the Olszewski family. It owes its neo-Gothic character to an 1876 reconstruction and was restored in 1960-1970. The building's unique architecture is recognizable by its distinctive octagonal shape with four lower projections. The interior is topped with a flat dome with lanterns, and its most valuable element is the early 18th-century altar, which houses an equally old painting of the Blessed Virgin Mary.