Fallout 3/Zone 8 Southern Plains and D.C Outskirts

Vault 101
Vault 101 is where you were born, and where you will die. Well, that's the theory anyway.

This vault is involved in a social experiment where humans are kept isolation from the outside world, where an extremely bleak outlook was created. It is featured in the initial four quests for creating your character, but also in Trouble on the Homefront.

Springvale
Springvale is an uninhabited ruined village.

There is a water tower to the south, and a small ranch within the village. That building contains Silver, who is trying to hide from Moriarty from Megaton - she wanted to leave, but when he refused, she took some caps and fled to the small shack.

Springvale Elemantary school is located to the north-east.

Megaton
Megaton is a small city built around an atomic bomb, and constructed from salvaged airplane components. It is featured in the Following in His Footsteps and The Power of the Atom quests.

Notable elements include:
 * Lucas Simms, mayor/sheriff that commisions you to disarm the bomb.
 * Mister Burke, who commisions you to detonate the bome.