The Sedlec Ossuary ( Kostnice Sedlec ) is a Roman Catholic Church in Sedlec , The Czech Republic, famous for its unusual, organic decorations.

Unlike other churches that like to use religious paintings and religious jewelery as decorations, this one uses between 40,000 and 70,000 human bone. Built especially as an ossuary in 1400, the macabre decorating started in 1870 when the Schwarzenberg family hired a woodcarver to arrange all the heaps of bones in order. You can see the result in the photos, but just so u know, there are 4 giant bell-shaped mounds in each corner of the chapel, an enormous chandelier which contains at least one of every bone in one's body in the center of the chapel, and a signature of the artist, executed in bone, of course, and other "works of art".