Justice League Hangar



The Justice League Hangar was used by the Justice League of America as a place to store their aircraft and spacecraft, such as the invisible jet, Batcopter and probably even the Supermobile. A runway was located right outside the hangar for the purpose of takeoff and landing of the invisible jet.

When Batman and Robin were on their way to Egypt for a Justice League assignment, he took off in his Batcopter at the Justice League Hangar. Wonder Woman too, used her airplane to head off to England, using the Justice League Runway for liftoff.

Location
The exact location of the Justice League Hangar wasn't entirely clear, but presumably it was very close to the Hall of Justice. This is implied by the fact that Marvin White and Wendy Harris seemed to go there on foot in a fairly short period of time, although this is merely conjecture.

It should also be noted that the hangar seemed to be located in an area with no other buildings around, which seems strange, since the Hall at that time was located in Downtown Gotham City.