Goldendale Observatory State Park is located in the town of Goldendale, Washington. It is known for its impressive observatory, which is open to the public and offers spectacular views of the night sky. The park features a variety of exhibits and interactive displays, as well as a 24.5-inch reflecting telescope.

One of the main reasons to visit Goldendale Observatory State Park is to see the stars and planets in the night sky. With clear, dark skies and minimal light pollution, the observatory provides a unique opportunity to view celestial objects. Visitors can take guided tours of the observatory and participate in stargazing events.

The park also offers hiking trails, picnic areas, and a playground for children. The nearby Maryhill Museum of Art and Stonehenge Memorial are also popular attractions.

Interesting facts about the area include that Goldendale is designated as an official "Dark Sky Community" by the International Dark-Sky Association due to its efforts to preserve the night sky for stargazers. Additionally, the observatory's 24.5-inch telescope is one of the largest public telescopes in the country.

The best time of year to visit Goldendale Observatory State Park is during the summer months, as the weather is warm and clear skies are more common. However, stargazing can be enjoyed year-round, weather permitting.