Oryukdo

A cluster of rocky islets off the southeastern coast of Busan marking the symbolic boundary between the East Sea and the South Sea. Their name means five-six islands, reflecting how, depending on the tide and vantage point, they appear to number either five or six. The mainland headland facing them holds a glass-floored skywalk cantilevered over the crashing waves and a coastal trail with panoramic views. A lighthouse crowns the outermost islet, and boat tours circle the formations, which are protected as a scenic natural monument.