The Bones Ossuary

In an alcove as you go down the stairs.

It's hard to make out, but there is a chandelier which has at least one of every bone in the body in it.

The coat of arms of the family who owned all the land around the area, including the church.
The bottom right is a raven picking out an eye, representing their victory over the Turks.

Then I noticed this above one of the archways at the Cesky Krumlov castle.
Yes, the same family has owned the castle in the last few centuries.