Vault 17

Vault 17 is a mentioned only location $$

Background
Lily Bowen lived in the vault until she was 75 years old, at which time she was captured by the Master and turned into a Nightkin.

Appearances
Vault 17 is mentioned $$

Behind the scenes
In concept art for Fallout 4 for Vault Jumpsuits, 17 is used as a number.