A mausoleum is an external free-standing building constructed as a monument enclosing the interment space or burial chamber of a deceased person or persons. A mausoleum may be considered a type of tomb or the tomb may be considered to be within the mausoleum. A Christian mausoleum sometimes includes a chapel.

A necropolis (plural: necropolises or necropoleis) is a large cemetery or burial place (from Greek nekropolis "city of the dead"). Apart from the occasional application of the word to modern cemeteries outside large towns, the term is chiefly used of burial grounds, often an abandoned city or town, near the sites of the centers of ancient civilizations.

Catacombs are ancient, human-made underground passageways or final resting place of refuges or subterranean cemeteries composed thereof.  Many are under cities and have served as a refuge for safety during wars or as a meeting place for cults during historic times.