The Sedlec Ossuary in the Czech Republic looks very normal on the outside:

But at the entrance, you can already tell there’s something different about this chapel:

Once inside, there are skulls and other bones everywhere:

Here’s a closer look at the chandelier made of bones:

This is a coat of arms made of bones in the chapel:

And here’s a place where people leave offerings:

There are many other similar chapels throughout Europe.
This is the entrance to the Capela dos Ossos in Évora, Portugal. It already gives you a sense of foreboding…

Above the door, it says: “We bones, are here, waiting for yours.”

Inside the chapel (the walls are covered in bones):

This is an ossuary, or a box for bones, which seems a bit strange given how they’ve chosen to decorate…

Yes, that’s a skeleton hanging from a rope:

This is the exterior of St. Bartholomew’s Church in Czermna, Poland. Again, it looks very normal on the outside.

But the inside is just full of bones:

A closer look at the ceiling:

They even have bones under the floor!

Here’s the altar:

An angel amidst the bones:

Finally, here’s a quick look at a few other “bone churches”…
Our Lady of the Conception of the Capuchins in Rome, Italy:

The Basilica of St. Ursula in Cologne, Germany (the mosaic on the wall is made of bones):

San Bernardino alle Ossa in Milan, Italy (again, the wall is covered in bones):
