The towers were built without the use of traditional lime mortar, utilizing a secret resin-based bonding agent that has held the bricks together for over a millennium.
The complex includes a main tower (Kalan) for Shiva and two smaller towers dedicated to the deities Ganesha and Nandi.
Po Sah Inu is named after a Cham princess who is remembered in local folklore for her contribution to regional agriculture.
The architectural style features the characteristic 'saddle-roof' design common to the late Champa period.
Archaeological excavations revealed a 15th-century altar inside the main tower during the 1990s restoration.
The towers are oriented toward the east, following traditional Hindu cosmological alignment practices.
The Po Sah Inu Cham Towers are a group of three ancient Hindu shrines built by the Champa Kingdom during the 8th and 9th centuries. Located on Ong Hoang Hill in Phan Thiết, these structures are dedicated to the worship of Shiva and represent the Hoa Lai architectural style. The main tower stands approximately 16 meters tall, while two smaller towers accompany it on the site. The complex was constructed using fired brick connected with a unique, durable organic adhesive mortar. Renovations conducted in the 1990s and early 2000s helped stabilize the structural integrity of the site. It served as a religious center for the Cham people and remains a site of active worship during specific festivals. Visitors can observe intricate carvings depicting Hindu motifs, though many have weathered over the centuries. The site overlooks the coastal landscape of Mui Ne and the city of Phan Thiết.
The elevated viewing platform near the edge of the hill offers the best perspective of the towers with the city of Phan Thiết in the background.
Wear comfortable walking shoes with good grip, as the hilltop paths are uneven.
Visit during the early morning to avoid the intense midday sun and heat.
Bring water and sunscreen as there is limited shade near the towers.
Avoid touching the brick walls, as the ancient masonry is fragile and currently undergoing conservation efforts.
Dress modestly by covering shoulders and knees; remove footwear before entering the interior of the shrines.
