Sea of Tranquility

The Sea of Tranquility is a location on the Moon mentioned in Fallout 4.

Background
A reference to the Sea of Tranquility appears on a plaque in Museum of Freedom, where it mentions soldiers had fought there to secure America's freedom.

Appearances
The Sea of Tranquility is mentioned only in Fallout 4.

Behind the scenes
The Sea of Tranquility is based off of the Mare Tranquillitatis, a lunar mare.