Since opening in 1892, the winter park at Holmenkollen has hosted its annual Ski Festival along with many other winter sporting events, including the Olympics. The 60-meter-high Holmenkollbakken ski jumping hill is hard to miss. On the observation platform at the top of the jump, take in the panoramic view of Oslo and the Oslo fjord. Then, go inside the hill to visit the Ski Museum. Opened in 1923, the museum is the oldest of its kind in the world and its permanent exhibitions showcase 4,000 years of ski history.