Old Mormon Fort
is really Old Las Vegas Mormon Fort, NV
Real place, still recognisable
Real-world photo: Wikimedia Commons
In the game
The Followers of the Apocalypse run their clinic inside the old fort walls in Freeside.
The real place
Built in 1855, it is the oldest building in Nevada and the first non-native settlement in the Las Vegas valley.
Visiting
It is a small state historic park, a short walk north of Fremont Street.