Stryker's Island Penitentiary is the name of Metropolis' largest prison facility, as well as the name of the island on which it sits. It is located in Metropolis' West River south of New Troy. In addition to housing some of the worst offenders that Metropolis has to offer, it is also designed to contain various super-powered individuals as well. Daily tours of the facility are provided to help supplement the rising costs of staff, maintenance and upkeep.