i did some research
i belive the church is called the Sedlec Ossuary.
the bones were dug up out of the church grounds to make room for more bodies to be buried :/ the bones were dug up and placed into a crypt in 1511.
the church was decorated internally by a wood carver in 1870 usign the bones from the crypt.
apparently there were 40,000 skeletons available at the time for him to use
more info here >
http://www.ludd.luth.se/~silver_p/kutna.html
