When the Justice League originally formed, they set up their headquarters inside Mount Justice. Unfortunately, the Joker located their base and attacked. As a result, the League was forced to relocate. In order to create a better public image, the League built the Hall of Justice in Washington, D.C., which would act as faux headquarters and public front. In truth, the League designed the orbiting Watchtower as their real base which could be accessed through Zeta-Tubes.
The building was partially open to the public, and Catherine Cobert toured groups, showing them the trophy room and the main hall.
Aqualad, Robin, Speedy and Kid Flash were brought to the Hall of Justice by Aquaman, Batman, Green Arrow and Flash as the first step of their induction into the Justice League. They were given a tour of the facility, concluding in the library. There the League intended to leave their sidekicks while they discussed a series of possibly related crimes that all had occurred in one day. However, before they could leave, Speedy exploded with anger over the limited access that he and the others had been given. Speedy revealed to the shock of Robin, Aqualad and Kid Flash the truth about the Hall of Justice being a public front, having already been informed about the Watchtower by Green Arrow.
As a result, Speedy quit as Green Arrow's sidekick. After his departure, the League was alerted to two disasters occurring simultaneously. One was a fire at Project Cadmus while the other was a mystical villain known as Wotan. The League rushed off to deal with the Wotan threat, and ordered their sidekicks to remain behind. However, Robin proceeded to hack the Hall of Justice's computer system and he along with Kid Flash and Aqualad went to investigate the Cadmus fire.
After Gamma Squad captured a Krolotean, the League brought him to the Hall for interrogation. Martian Manhunter tried his best, but could not read the creature's mind. Miss Martian could, though the alien was rendered comatose as a result.
Captain Marvel, Zatanna and Bumblebee joined Superboy, Miss Martian and Mal Duncan at the Hall, as the latter three were gathering their belongings they salvaged from Mount Justice. L-Ron, the majordomo of Despero, arrived and generated a force field around the hall, so his master could fight the heroes. The fight lasted several hours, during which army troops lead by Wade Eiling surrounded the building.
Eventually, the heroes inside defeated Despero. This did not sit well with L-Ron, who accused them of cheating, and decided to activate a bomb in his casing. The explosion brought down the entire hall. Meanwhile, the ambassador arrived and opened the barrier with a special device.
Observation deck: Visitors are allowed to look into the Hall's library and observe members of the Justice League during their down time.The window could be turned opaque if the League attended private matters.
Zeta-Beam portal: Hidden through a private security door in the Library, a portal stands ready to teleport the League members to their various bases.
The Hall of Justice was originally created and introduced in the Super-Friends animated series.
The Hall of Justice did not appear in the main continuity of DC Comics until 2007 following the events of the Infinite Crisis and One Year Later. The Hall was designed by Green Lantern (John Stewart) and Wonder Woman and financed by Bruce Wayne. Like in the Young Justice cartoon, the Hall serves a public front for the League, while their true base is the Watchtower orbiting satellite.
The trophy room showcases many artifacts from the comics. Apart from Amazo and the Appellaxians, these are: