1 Best Sight in Side Trips from Seoul, South Korea

Climbing 1,540 feet above Ganghwa Island, Manisan is one of Korea's most sacred mountains. Dangun, the legendary founder of Korea, is said to have performed sacrificial rites to the heavens from near its peak. The site where he performed those rites is now marked by an ancient stone altar, the Chamseongdan, where memorial rites are held every October.