Yongmasan Skywalk Observatory is an observatory facility created along Section 4 of the Seoul Dulle Trail (Mangwoo and Yongmasan) to allow visitors to enjoy both the forest and the city at a glance. It is constructed as a wooden deck structure with a maximum height of ten meters, enabling visitors to walk approximately one hundred sixty meters above the forest. From the observatory, visitors can appreciate the landscape of Seoul’s mountain ridges and the urban scenery stretching from Namsan N Seoul Tower to Bonghwa Mountain, Dobong Mountain, and Bukhansan. In addition, a variety of tree species and garden elements have been added around the observatory, allowing visitors to enjoy a diverse landscape.