The Po Sah Inu Cham Towers (also known as the Poshanu Cham Towers or Pho Hai Towers) constitute a national-level architectural and artistic heritage site that bears the distinct imprint of the ancient Champa Kingdom. The complex is situated on Ba Nai Hill in Phan Thiet City, approximately 7 km northeast of the city center. Constructed between the late 8th and early 9th centuries, it is one of the oldest and best-preserved Cham tower complexes in Binh Thuan, dedicated to the worship of the god Shiva and Princess Po Sah Inu. The complex comprises three main towers: - Main Tower (Tower A): Standing approximately 15 meters tall with a square base and three tiers, it houses a sandstone Linga-Yoni altar inside. - Intermediate Tower (Tower B): Standing about 12 meters tall and located next to the main tower, it features a simpler architectural design and was formerly used to worship Nandin, the sacred bull (Shiva's mount). - Auxiliary Tower (Tower C): Standing over 4 meters tall, it was dedicated to the Fire God; today, only the lower section of the original structure remains. A visit during the seventh lunar month offers the chance to experience the vibrant atmosphere of the Kate Festival—the most important Cham festival—featuring traditional fan dances and Saranai trumpet performances. Additionally, rituals such as Rija Nugar and Poh Mbang Yang take place here at the beginning of the year.