Poshanu Cham Tower is one of the most important relics of Cham culture in Central Vietnam. The Cham ruins are not just famous for its unique and sophisticated architectural patterns, but here is also a common place for cultural activities of Cham people.

Poshanu Cham Tower or Po Sah Inu is also called Pho Hai Cham Towers. This is a group of ruined temple remains of the ancient Kingdom of Champa. The relic is located on Ba Nai Hill of Phu Hai Ward, about 7km from the center of Phan Thiet City to the northeast. The attraction of Poshanua Cham Tower as well as that of other Cham towers is the sophistication in unque architecture and art of ancient Cham people. Many magical and outstanding works seen today hide a series of mysteries.

As being the former Cham Kingdom's symbol (in the heyday from the 8th century to the 9th century), the Poshanu Cham Towers relic is the place of worshiping Shiva - one of the main deities of Hinduism. In 15 century, some towers were built in this relic to worship Princess Po Sah Inu. There are also two towers worshiping Linga and Yoni. Besides, god of fire and Nandi bull were worshiped in Poshanu Cham Tower. Poshanu Cham Tower is a quite small complex but is still kept intact. In recent years, local authority and people have had efforts to maintain this historical relic. There are more and more people visiting here.

This is the only Cham architectural work in Phan Thiet. It was built 1,200 years ago. However, there are only three towers remaining (main tower, medium tower, and small tower). Inside the main tower, there are stone altars of Linga and Yoni. They are the symbol of Shiva with many carved and sculptured patterns reflecting existence and growth of Cham reproduction. In some documents, there was a stone bull in the medium tower, but the stone bull disappeared. Today, these towers belong to Cham villages of Ma Lam, Ham Tri, and Ham Phu. Annually, local people from other places come to Poshanu Towers to conduct religious ceremonies.