Slottsskogsobservatoriet, Astronomical observatory in Slottsskogen Park, Gothenburg, Sweden

Slottsskogsobservatoriet sits on a hill in the northern part of Slottsskogen Park in Gothenburg and looks out over the city. The building holds several telescopes of different sizes that let visitors watch the moon, planets, and distant star clusters.

Astronomer Axel Corlin, professor Henrik Block and others pushed for a research observatory in Slottsskogen in 1918–1923, but the plans stalled for lack of money and feared opposition. A donation by Barthold Lundén to the city in 1926 allowed a first observatory, a 16-square-metre wooden shed, to open on 4 September 1929, with Otto Holmberg as first director. The present building, with two telescope pavilions, offices and lecture rooms, was first used on 22 November 1985 for the return of Halley's comet.

The observatory serves as a public place for watching the sky together, where visitors join evening sessions to learn about stars and planets. People come here to explore the heavens through telescopes and discover how the night sky works.

Viewing sessions take place mainly during the darker months from September to March when the sky stays dark longer. Visitors should bring warm clothes since stargazing happens outdoors and nights get cold.

The observatory's 30 cm mirror telescope, mounted in one of the pavilions, came from a donation by the Erna and Victor Hasselblad Foundation in summer 2003. The current building was first used on 22 November 1985, when Halley's Comet returned.