Keystone City is a fictional city in the DC Comics universe. It is often depicted as a sister city to Central City, the home of the Flash. Keystone City is known for its high crime rate and has a long history of corruption. However, it is also home to several superheroes, including Jay Garrick, the original Flash, and Wally West, the third Flash. The city's location is often depicted as being in the Midwest United States. Keystone City has appeared in numerous comics, TV shows, and video games within the DC Comics franchise.