High on the peak of Mt. Geumjeong, Geumjeongsanseong, formerly called the Dongnaesanseong, is the largest fortress in South Korea. There is only about a 4km (2 1/2-mile) section left from the original today, presumed to be built during the Three Kingdoms Period. The present fortress was built in 1703 after the Imjin Waeran to prepare for further invasions from Japan, but none ever came. The hills are great for a half-day of hiking -- the small villages nearby are known for their charcoal-grilled goat meat and makgeolli (a milky white rice wine). Admission includes entry into Beomeosa.