Demonstration vault

A showing to the general public illustrating the benefits of a Vault-Tec vault. There have been at least three known demonstration vaults in the United States of America:
 * The Los Angeles Vault that the Master used in Fallout.
 * An exhibit built into the Washington D.C. Museum of Technology in Fallout 3.
 * Vault-Tec: Among the Stars, a exhibit showcasing a potential interstellar vault, while demonstrating contemporary Vault-Tec technologies and terrestrial Vault features found in the Fallout 4 add-on Nuka-World.