The Dalseong Korea-Japan Friendship Center opened on May 3, 2012 to highlight the philanthropy of General Kim Chung-seon (Japanese name Sayaka, 1571-1642) and promote friendship between Korea and Japan. Kim Chung-seon was a Japanese general who defected to Korea during the Japanese invasion. Shortly after arriving on Korean soil as a commander of a Japanese army, Choi together with his subjects defected to Korea, a choice that has been traditionally attributed to his respect for Korean culture. He transferred the technology of manufacturing rifles to the Korean army and contributed greatly in battles in Gyeongju and Ulsan. A great number of tourists visit the center to learn about history, including students and their parents, as well as numerous Japanese tourists who visit to commemorate the spirit of General Kim. The center features exhibition rooms, a 3-D theater, a tea ceremony room, relics, manifestations of traditional games in Korea and Japan, documents from Wakayama Prefecture in Japan, and a site for experiencing archery, all of which can be utilized free of charge.