The Sedlec Ossuary or the Church of Bones.
In a small chapel located in Sedlec, in the suburbs of Kutna Hora, Czech Republic.
Decorated by more than 40.000 human skeletons artistically arranged to form decorations and furnishings for the chapel.
A big chandelier of bones, the coat of arms of the Schwarzenberg family…

If you want to visit it, travel to Prague, and then a 1 hour trip till Kutna Hora.