What type of chamber in a mausoleum is generally used to contain casketed remains?

A crypt is a type of chamber specifically designed to hold casketed remains in a mausoleum. This structure typically consists of an above-ground vault or room that offers a respectful and permanent resting place for the deceased. The design caters to traditional burial practices by allowing families to entomb their loved ones in a dignified environment separate from the ground, preserving them within the sturdy confines of a building.

In contrast, a niche commonly refers to a smaller space that is primarily used for urns containing cremated remains rather than for casketed bodies. A sanctum can refer more broadly to a sacred or holy place, often without the specification needed for casket burials. An urn garden is an outdoor area designated for the placement of urns, again typically associated with cremated remains. Each of these terms highlights different aspects of memorialization, but the crypt serves the distinct purpose of housing caskets specifically, making it the correct choice here.