Gayasan National Park
It takes two days to climb the entirety of Gaya Mountain but most travelers opt to visit the park for just one day. The most popular route passes through the Hongnyu-dongcheon stream to the peak, Sangwangbong.
Along this route, hikers can visit Haein Temple, one of Korea’s most important Buddhist temples. Founded in the 9th century and rebuilt in the 19th century, it is best known for its complete copy of the Buddhist scriptures, the Tripitaka Koreana.