From the 1890s to the 1990s, the Colorado death row was located at the Colorado Territorial Correctional Facility. The execution chamber was also located in this prison. In the 1990s the Colorado State Penitentiary opened. Previously state statute dictated that prisoners with death sentences were to be held at the administrative segregation facility at the Colorado State Penitentiary. In 2011 the State of Colorado moved its death row prisoners in order to settle a federal lawsuit filed by Nathan Dunlap, a death row prisoner. Dunlap had complained about the state's lack of outdoor exercise facilities at Colorado State Penitentiary.