Spent the day tripping in Bohemia travelling from Prague to Kutna Hora to see the Sedlec Ossuary and St Barbara's gothic cathedral. The Ossuary (bone church) is made of thousands of human bones, once buried on the popular sacred church grounds. When the plague hit they had to make room but wanted to maintain the sanctity of the remains so they brought them into the church and created this over the course of a few hundred years.