Vault (Fallout)

A vault is a type of subterranean installation initially designed by the Vault-Tec Corporation, later constructed in collaboration with RobCo Industries. Officially, they were designed for the sole purpose of sheltering up to one thousand citizens each in the event of a nuclear holocaust; however, in reality, they were a series of secret experiments orchestrated by the United States government.

In When the Cold Breeze Blows Away, it will be owned by Vault-Tec Corporation and United Nations