This is the real thing. This is actual human sculls and bones.

This is shot in a church in a small town (Kutná Hora) outside of Prague. It's an ossuary and it's decorated with an amazing amount of human bones. The cemetery has been very popular (popular is probably the wrong word here) due to the fact that in the 13th century an abbot covered the cemetery with 'Holy Soil' from Jerusalem. During the plague sick people used to come here to die. In 1870 a woodcarver was hired to decorate the church with the remains of all these people. He had about 40 000 sets of bones to work with. Among the most impressive things he made is an enormous chandelier, a coat of arms, and two big (6ft) chalices. There are bones everywhere.

It's an amazing sight to see the interior of this church. This shot is such a small part of it all.

(It was pretty dark in the ossuary and I didn't have my tripod and I didn't want to use the flash so to get reasonable shutter speeds I had to use ISO 800 so it's pretty noisy.)