Bone Chalice. Sedlec Ossuary, Kostnice Sedlec, or "Bone Church" in Kutná Hora, Czech Republic. Bone pyramids were stacked in the ossuary by (according to legend) a half-blind monk around 1511, when a mass grave was unearthed and the bones needed a new home. In 1870, František Rint was emplyed to put the bones in order, and so the ex-woodcarver did; among his works of bone art, he left behind his signature in, of course, bones.
The Old Jewish Cemetery, Josefov, the Jewish Quarter of Prague. "t was in use from the early 15th century (the oldest preserved tombstone, the one of Avigdor Kara, dates back to 1439) until 1787.... it has been estimated that there are approximately 12,000 tombstones presently visible, and there may be as many as 100,000 burials in all." (http://en.wikipedia.org/wiki/Old_Jewish_Cemetery,_Prague)