St. John's Fortress, also known as St. Ivana Fortress, is located on the sea in the southeast corner of Dubrovnik Old Town, adjacent to the old port. The fortress is surrounded by the sea on three sides. There are trails around the base of the fortress. Tourists can follow the trail around the fortress. The trail is below the sea. There is a embankment connecting the fortress, there are benches on the embankment, stroll here on the summer beach, sit on the bench to rest, the sea breeze brings a cool. When night falls, the lights gradually light up, and you can enjoy the night view of the pier opposite and the ancient city on the mountain.