Goldendale Observatory State Park (temp. closed thru 2019, see info) 
1602 Observatory Dr.
Goldendale, WA 98620
509-773-3141
http://parks.state.wa.us/512/Goldendale-Observatory
Observatory, State Park: Picnic, Science, Walk
Goldendale Observatory is a 5-acre facility on a hilltop 2,100 feet above sea level and 2 miles north of downtown Goldendale. The park, with its large public telescope, has attracted hundreds of thousands of sky-watchers since its dedication in 1973. There are two unsheltered picnic tables, available first come, first served.
*** The Goldendale Observatory will be closed March 1, 2018 through fall of 2019 for maintenance and upgrades. During this time, solar and dark sky interpretive programs will take place at the nearby Stonehenge building (located at 87 Stonehenge Drive). Stonehenge hours will be 1 to 11:30 p.m. Friday through Sunday.