Demonstration vault

A demonstration vault is a showing to the general public illustrating the benefits of a Vault-Tec vault.

Background
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, an exhibit showcasing a potential interstellar vault, while also demonstrating contemporary Vault-Tec technologies and terrestrial vault features in the Fallout 4 add-on Nuka-World.