The Ursa Observatory in Kaivopuisto is the most visible landmark on the highest point of the park and a popular symbol of Helsinki. The observatory was built in 1926. Being so easy to get to, the observatory is still used regularly by amateur astronomers and members of the public. The observatory is open throughout the year, usually on Sundays, presenting the Sun in summertime and the stars in wintertime.
On Helsinki Day visitors can examine the closest star to us, the Sun, unless it’s cloudy. You might even see Sun spots and flares on the surface. A guide will tell you more about the Sun and answer any of your questions. Visitors are welcome at any time during opening hours.