The woodland north of the Holmenkollen Ski Jump, known as Nordmarka, is a prime destination for hiking, mountain biking, sledding and skiing. It's also the geographical centre of the city, which must make Oslo, quite appropriately, about the only capital in the world to have a wild forest at its heart! For skiers, there is Tryvan Vinterpark . In the summer, the Tryvannstårnet observation tower is a good place to start a hike or a bike trip.
Make sure you take a container for picking blueberries in summer. From the Holmenkollen T-bane station, take the scenic ride to the end of the line at Frognerseteren and look for the signposted walking route.
