Kaywo Park is the oldest Park in Helsinki. The park is full of green grass and tall trees. It's a good place to play outdoors. If your schedule is not tight, you can spend half a day renting a bicycle here, cycling in the park, enjoying fresh air, basking in the sun, and finally having a picnic in the park. The highest point in the park is the Ursa Major Observatory. At the Observatory, you can observe the mysterious constellations with advanced instruments. In summer, you can see little bears, big bears, Cassiopeia and Libra wandering on the horizon; in winter, you can see Orion, Taurus and Sirius, the brightest sign in the night sky.