The Sedlec Ossuary is a small macabre Christian chapel. This strange place is located beneath the Cemetery Church of All Saints in Sedlec, a suburb of Kutn Hora in the Czech Republic.
The ossuary was built for mass graves unearthed during construction, or simply slated for abolition to make room for new burials. Its interior is composed exclusively of approximately 40,000 human skeletons which have been ordered and artistically arranged to form decorations and furnishings for the chapel.
for more pics
Sedlec Ossuary