The Flash Museum was originally located in Central City and contained memorabelia in honor of those who have held the name Flash. The museum featured various exhibits on the Flash, including his battles and his rogue's gallery of foes. In addition to the exhibits, the Flash Museum housed a vast storage of various artifacts and weaponry that the Flash had encountered. Some of these weapons were actually part of public exhibits, and were occasionally used during a fight. Originally, the museum was founded to honor the achievements of Barry Allen, the first Flash of the modern era and stalwart member of the Justice League of America. As years passed, the museum began showcasing materials as they related to the original Flash, Jay Garrick, as well as Barry's successor, Wally West.
Arguably, the most famous item on display at the Flash Museum was the Cosmic Treadmill, which had been utilized on numerous adventures to send the Flash backwards and forwards through time, and even to parallel universes.
The museum was destroyed and subsequently rebuilt several times during the careers of both Barry Allen and Wally West. It was relocated to Keystone City after the original was destroyed by Zoom.
The statue of Inertia on display at the museum was, in fact, not a statue at all, but the actual villain himself. He had been put in suspended animation by Wally West and forced to look at the statue of Bart Allen as punishment for his part in the young speedster's murder.
The Flash Museum appears in the Justice League Unlimited episode "Flash and Substance." True to form, it is destroyed in the fight between the Flash, Batman, Orion and several members of the Flash's rogues gallery.
A huge statue of the Flash is built in front of the museum. Among the exhibits are Jay Garrick's helmet, the Kid Flash costume, and a globe with miniature Flash and Superman racing around it to commemorate their race in the Superman: The Animated Series episode "Speed Demons."
The Flash Museum is referenced in the live-action CBS television series. In the episode "Fast Foward", Barry Allen is thrown 10 years into the future where Central City is ruled by a brutal dictator. Allen is taken to the headquarters of the resistance, where they keep a room full of Flash artifacts that they refer to as "the Flash musuem." Among the artifacts are The Trickster's costume, Nightshade's costume (from the episode "Ghost in the Machine") and a replica Flash costume.
In the "Cobalt Blue" storyline, the Flash Museum is shown to exist in the 25th and 30th centuries. By the later era, the museum contains exhibits on the many Flashes of the previous 1000 years. The new curators are a pair of robots named Dexter and Myles.