The telescope domes and support building at Goldendale Observatory State Park, Goldendale, Washington, United States.
The telescope domes and support building at Goldendale Observatory State Park, Goldendale, Washington, United States. Ian Poellet · CC BY-SA 3.0

Goldendale Observatory State Park Heritage Site

State Historic Site · Washington · Washington State Parks & Recreation Commission

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Official site
parks.wa.gov
Managed by
Washington State Parks & Recreation Commission

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Sources: Wikimedia Commons / editorial, State agency, USGS PAD-US · updated 2026-09-12