On the fourth day, venture out to Long Hai Beach, located a short distance from Back Beach. This pristine beach offers a quieter and more secluded atmosphere compared to Back Beach. Enjoy a day of sunbathing, swimming, and beachcombing. In the afternoon, visit Dinh Co Temple, a beautiful seaside temple dedicated to the Goddess of the Sea. Admire the temple's intricate design and learn about its cultural significance. Don't forget to try some local seafood delicacies at the nearby restaurants.