As of early 2024, Cheongsapo Daritdol Observatory is no cost to visit but beneath upkeep when we frequented (so partly open) ??we hope they deal with the cracked panels to the glass walkway ??eek! They?�re part of the Haeundae Blueline Park, a redeveloped area that reworked an old railway monitor https://solangeh207bjr4.shivawiki.com/user