(via Architecture Photography: Folger Offices / WA design Folger Offices / WA design – ArchDaily)
Wall vaults - burial compartments within perimeter of burial ground. One vault was often used for an entire family. After a respectable time, the remains of a burial were pushed to the back where construction of the vault allowed it to fall to a receptacle below; the space was then ready for another recipient. These compartments were vaulted in early construction. This later gave way to the flat marble lintel slab as seen in construction of wall vaults in Lafayette Cemetery No. 1.
Tokujin Yoshioka, Rainbow Church, "Tokujin Yoshioka_Crystallize", Museum of Contemporary Art, Tokyo