The chapel made from thousands of human BONES

Located in the old town of Czermna, Poland, the skeletons were placed in the walls and ceilings of the chapel between 1776 and 1804.
The skulls and leg bones of over 3,000 victims are meticulously arranged, while over 21,000 additional remains are hidden behind a trap door in a crypt below the church. The chapel was created after a local priest, named Vaclav Tomasek, visited shallow grave sites commemorating the fallen soldiers and civilians killed in the Silesian Wars and the Thirty Years' War as well as those devastated by plagues and cholera.

SOURCE-DAILYM