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.

 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.

This relic is  a famous attraction in Phan Thiet. For tourists, visiting Poshanu Cham Tower is one of should-not-miss things to do in Phan Thiet. During Kate festival, at Poshanu Cham Towers, the atmosphere here is so exciting. Cham group hold important ritual customs and featuring festive activities. Tourists from everywhere come here to visit, explore and admire traditional features of Cham culture. Particularly, when popping in Poshanu Cham Tower, tourists have the opportunity to see many unique and fascinating Cham ceremonies and dances. Also, fishermen in other neighboring areas come here to pray for safe and peaceful voyages. Every year, in Rija Nuga and Poh Mbang festivals, a large number of local people come here to pray for rains, and good things.