The Eggenburg Charnel, Austria

Catacombe di Roma, Italy

Catacombes de Paris, France

Capuchin Catacombs of Palermo, Sicily, Italy

http://palermo.for91days.com/2011/11/06/the-bone-chilling-catacombs-of-the-capuchin-monks/

Capela dos Ossos, Évora, Portugal

Sedlec Ossuary, beneath the Cemetery Church of All Saints in Sedlec, Kutná Hora in the Czech Republic.

The Sedlec Ossuary, a small Roman Catholic chapel beneath the Cemetery Church of All Saints with the bones of between 40,000 and 70,000 people

St. Bartholomew's Church, Kudowa-Zdrój, Lower Silesian Voivodeship, Poland