Dedicate day 4 to exploring the nearby city of Phan Rang-Thap Cham, which is known for its rich history and cultural heritage. Visit the Po Klong Garai Cham Towers, an ancient Hindu temple complex that dates back to the 13th century. Explore the vibrant local markets, where you can find traditional handicrafts, textiles, and local delicacies. Don't forget to try the famous Ninh Thuan grape wine, which is produced in this region.