Blackgate Penitentiary

Blackgate Penitentiary is a prison.

History
Eddie Slick was in Blackgate for arson in December 2013.

Former inmates

 * Eddie Slick

Behind the Scenes

 * Within the DC comics universe Blackgate Penitentiary is found in Gotham City, the home of Bruce Wayne - also known as Batman. Blackgate is primarily used for holding any non super-powered villains.
 * it is possible that if Blackgate exist, So maybe that Gotham is also exist in the Arrowverse.