Before revision: Designated on August 20, 2011 Oregon Outback Oregon 1,012,000 Dark Sky Sanctuary Designated on March 11, 2024 Cherry Springs State Park Pennsylvania 430 2 Dark Sky Park Designated as a State DSP in 2000 by the Pennsylvania DCNR;Designated as an International DSP on June 11, 2007, by the IDA.
After revision: Designated on August 20, 2011 Oregon Outback Oregon Dark Sky Sanctuary Designated on March 11, 2024 Cherry Springs State Park Pennsylvania 430 2 Dark Sky Park Designated as a State DSP in 2000 by the Pennsylvania DCNR;Designated as an International DSP on June 11, 2007, by the IDA.