Pinnacle Highrise

Pinnacle Highrise, also known as Ruined Skyscraper is a building that is most easily accessed from the Fallen Skybridge, and appears to be the scene of a battle between Gunners and super mutants. The interior has been devastated. The other entrance is found by heading east from Old Granary burying ground past the unmarked Water Street apartments and further on, on the other side of a bus stop.

Layout
The 21st floor has a body of a Gunner on the couch ahead floor ahead, a second body behind the desk on your left as you enter, and a third body up the stairs near a lone super mutant. You can exit to the fallen skybridge or an elevator to the 11th floor.

The 11th floor is filled with super mutants fighting Gunners, as well as various bodies on the ground and has another elevator at the end of a long corridor.

The 6th floor appears to be the final floor and contains an ambush of 3-4 Gunners who will open fire once the elevator doors open. It contains an objective of the Jackpot missions. An exit leads to an exterior rooftop with a fire escape to ground level.

Notable loot
This location appears to contain no specific loot, but the large number of enemies and bodies inside may be worthwhile. The 11th floor contains a toolbox as well as a tool case in the rooms to the right of the elevator.

Appearances
The Pinnacle Highrise appears only in Fallout 4.