Foundation (known as 史普魯斯圓丘 before patch 188.8.131.52) is a location in the Savage Divide region of Appalachia in 2103, and is the headquarters of the Settlers. It is built on the former location of Spruce Knob.
A fledgling village built on the site of a pre-War tourist attraction. Foundation is the main base of the Settlers. Originally settled by members of a Construction Workers Union in Washington, D.C., they came to Appalachia under the leadership of Paige, in the hope that it would offer some reprieve from the horrors of the Capital Wasteland. Upon their arrival, and subsequent discovery of Spruce Knob, they repurposed the existing buildings, cleared the surrounding trees and Foundation was formed.
Foundation contains several buildings, including a barracks, boarding house, and a variety of stores belonging to the various Sunnys.
- 心情不佳的筆記 - 在史普魯斯圓丘東邊，怪胎秀西南邊，單軌列車電梯西北邊有一個垂直飛行機墜落的大巨坑，坑的邊緣地上有一個桌子和生化防護衣，筆記在桌子上。
- 老護衛，第14集：第2章 - 最靠南邊的宿舍內。
- 念珍的字條 - 有兩份同名字條
- Jen's journal, entry 1 - Holotape, on top of a table in Jen's room.
- Jen's goodbye - Holotape
- 佩吉的日記，紀錄1 - 在佩吉辦公區域的小房間辦公桌上。
- 佩吉的日記，紀錄2 - 同上，小房間門口旁邊檯子上，旁邊有個紙箱。完成商業機密任務後出現。
- 佩吉的日記，紀錄3 - 同上，小房間窗外的小桌子上。完成無形牽絆任務後出現。
- 佩吉的日記，紀錄4 - 同上，化學工作檯附近的白色控制台上。完成任務在身任務後出現。
- 佩吉的日記，紀錄5 - 同上，on top of a table surrounded by chairs. 完成秘密揭曉任務後出現。
- 奧布利的紙條 - Note, on a table in Aubrie's clinic, east of where Paige is usually found
- 艾爾西的故事 - Note, in the Taylors' home, on a kitchen counter.
- 瓦德的日記 - Note, in the medical office pod across from the power armor stations.
- As of patch 184.108.40.206, yao guai and Scorched no longer spawn in the settlement.
- As of patch 220.127.116.11, fast traveling to Foundation is free of charge.