Multiple choice general knowledge culture Which region in Korea did the UNESCO designate as a Biosphere Reserve in 1992? Jeju island Seoraksan National Park Cheonggyecheon Bukhansan National Park Reveal answer Fill a bubble to check yourself B Correct answer Explanation Seoraksan National Park was designated as a UNESCO Biosphere Reserve in 1992 due to its exceptional biodiversity and ecological significance. Located in the Taebaek mountain range, it's one of Korea's most beautiful natural areas.