Stark Industries itself appeared in Fortnite Patch 14.10, released Thursday and also known as the Stark Industries Update.
Stark Industries Fortnite POI
The new base, which belongs to Tony Stark, also known as Iron Man, takes Stark Industries as its focal point, but the map change caused by its arrival reaches much further into the surrounding area. The Stark Industries building itself lies at the southernmost part of a ring of influence stretching from Frenzy Farm in the south to Pleasant Park in the west, Craggy Cliffs in the north and Steamy Stacks in the east.
Frenzy Farms has disappeared completely to allow space for the Stark Industries headquarters, and the ring of influence has turned all the trees in the area an autumnal mix of red, orange and yellow for the first time in Fortnite history.
Iron Man himself can be found as a boss in the headquarters building, allowing players to defeat him, take his weapons and unlock a vault hidden somewhere in the building.