ISA Headquarters (Earth-2: Post-Crisis)

"Most of the tunnels have collapsed. There are only a few rooms left. What is this place?"

- Wildcat and Starman

The ISA Headquarters is the hideout of the Injustice Society of America, and its successor, Injustice Unlimited.

History
At some point, the ISA moved to Blue Valley and took the underground facility built by The Other Founding Fathers in the 19th century when Blue Valley was built.

Former Residents

 * Solomon Grundy