[I originally posted this in June 2018, but have reposted it to fix some broken image links]
St. Francis Xavier Church is centrally located and was built in the baroque style in the late seventeenth and early eighteenth centuries. The high altar is of particular interest and goes to the full height of the nave. It was also a busy church during my visit and that was entirely of worshippers, rather than just visitors to the building.
The altar was funded by Jan Czapski who was then the Governor of Chelmno and also a Great Crown Treasurer.
I couldn’t find the date of the grand pulpit, but it seems contemporary with the altar, and this is again richly decorated.