An ossuary is a chest, box, building, well, or site made to serve as the final resting place of human skeletal remains. They are frequently used where burial space is scarce. A body is first buried in a temporary grave, then after some years the skeletal remains are removed and placed in an ossuary. The greatly reduced space taken up by an ossuary means that it is possible to store the remains of many more people in a single tomb than possible in coffins. The practice is sometimes known as grave recycling.
The limestone James Ossuary from the 1st century
Human remains on the walls and ceiling of Skull Chapel, Poland
A chandelier made of bones in Sedlec Ossuary, Czech Republic
Ossuary at the Gallipoli battlefield; contains the remains of French soldiers
A tomb or sepulcher is a repository for the remains of the dead. It is generally any structurally enclosed interment space or burial chamber, of varying sizes. Placing a corpse into a tomb can be called immurement, although this word mainly means entombing people alive, and is a method of final disposition, as an alternative to cremation or burial.
Tomb of I'timād-ud-Daulah from Agra
The Pyramid tomb of Khufu
The Ohel, gravesite of the Lubavitcher Rebbes Yosef Yitzchak Schneersohn and Menachem Mendel Schneerson, and a place of pilgrimage, prayer, and meditation
Tombs and sarcophagi at Hierapolis