Dedicate your fifth day to exploring the cultural heritage of Nha Trang. Visit the Po Nagar Cham Towers, a complex of ancient Hindu temples built between the 7th and 12th centuries. Marvel at the intricate architecture and learn about the history and significance of these religious structures. Afterward, take a stroll along Tran Phu Street, the main beachfront promenade, and indulge in some shopping or enjoy a relaxing spa treatment. End the day with a delicious Vietnamese dinner.