One of the oldest parks in Helsinki. Because it is located at the top of the hill, it offers great views of the port, and it is built on a hill where you can enjoy some beautiful views from there. In addition, the observatory building historical astronomical devices, where you can learn about the oldest machines and devices that were used to monitor stars, planets and natural phenomena, as well as the history of the development of observatories, in addition, the observatory garden includes a small cafe that sells drinks that you can enjoy in the open air. .