What is a building containing crypts or vaults for entombment called?

A building that contains crypts or vaults for entombment is referred to as a mausoleum. This term specifically denotes a structure designed to house the remains of the deceased, often constructed above ground and featuring a grand or ornate design. Mausoleums can vary in size and often reflect the social status or wealth of the individuals interred within them.

In contrast, a tomb typically refers to a more individual burial place, often beneath the ground, and does not encompass the broader structure aspect of a mausoleum. A crematory is a facility specifically designed for the cremation of bodies and does not involve entombment. The term cemetery chamber may refer to a more generic space within a cemetery but lacks the specific connotation of a mausoleum that is explicitly built for entombment purposes.