22. Observatory
- COLLECTIBLES: Bobblehead, Caps Stash (8), Holotape, Magazine, Nuka-Cherry
- CRAFTING: Armor, Chemistry (3), Weapons (2)
- ITEMS: Arms and Ammo+, Health and Chems, Trunk
- INFO: Expected Enemy: Robot; Landmark; Scavenge Rating: 3; Size: 4; Threat Level: 15–99
- LOCK: Door (0, 0, 1, 1, 2), Safe (3), Terminal (1, 1, 2, 3, 3)
- ITEM EXAMPLES: Atlas Utility Key+, Bobby Pin Box, Cryo Mine, Desk Fan, Enamel Bucket, Instamash, Oil Can, Plasma Mine, Rum Bottle, Security Baton, Tactical Combat Shotgun

The Atlas Observatory, an atmospheric and astronomic facility, is one of the largest domed telescopes still left standing. It offers loot as well as information on what scientific research was going on before the bombs dropped. Outside, the rocky mountain outcrop upon which the observatory is built offers exceptional views to the west, toward Monongah. There’s a small exterior door (2) on the structure’s western edge, but the main entrance is on the south side, after navigating an enemy-filled parking lot (or sneaking in via the lower loading dock entrance to the southeast). Inside, the circular structure is somewhat confusing unless you methodically search each chamber, culminating with a check of the giant telescope itself.