Mount Justice, or the Secret Sanctuary, is a secret base under a mountain located in the town of Happy Harbor, Rhode Island. It was used as a base for the Super Friends and the Justice League of America, before it was compromised and they moved to the Hall of Justice.
Built for a prospective Weather Research Station that was "planned" as a joint WayneTech/Queen Consolidated cooperative effort; but its construction "fell through" and ultimately the research station was never built.
When Cyborg formed Young Justice, he moved his team there (along with Red Tornado's AI). When the Justice League was re-established and Titans Tower reopened, Cyborg took his team there and they became the third generation of Titans.
But when Tim Drake decided to make his own team, to take on black-ops missions that the Justice League couldn't do, he brought the former members of Young Justice and formed The Team, taking back Mt. Justice as their headquarters.
Trivia and Notes
- Mt. Justice also works as a satellite base, training facility, and safehouse for the Titans and the Justice League... and I guess Dark Justice could use it too.
- One of the rooms is Wally's "souvenir" room, where he keeps mementos from his missions.
- Mt. Justice is based off of the headquarters used in the Young Justice Animated Series.