Tower A1

A1 was the main sanctuary (kalan) in the cluster of towers. Tower A1 used to be 24m in height. Its foundation was square with sides of 10m long. The tower had two doors, the main one opening to the east and the other to the west. It stood opposite to tower B1, in the centre, to form a cluster of towers dedicated to the cult of Srisanabhadrevara, a god honored as supreme in My Son. All the entrance gates had a mandapa, a two-tier pyramid shaped structure. The top of this conical shaped tower was made of stone. There was a relatively large set of linga in the tower. The roof of the tower was a three-tiered pyramidal structure. On each tier's walls were a small false door and motifs of human figures standing under an arch. These doors and arches brought about the grandeur that can not be found in other towers.

The two false doors on the gables of the tower were decorated with two pyramidal arches, one above the other. The entrance door was flanked on each side by a mandapa, a tower in miniature, with two false doors. Inside were motifs of human figures clasping their hands in taking a bow under the arches supported by two square pilasters carved with floral friezes. These figures had a gentle and noble look, and their costumes were similar to those found of tower B5. The pilasters of the tower were slender. Each of them had a deep opening in the middle, running from the feet to the relief lines, protruding on the four sides of the tower. So, each pilaster seemed to be a double one. Arches were varied in shape and bore no decorations; the eaves are layered with gaps in between. Stone decorations around the tower included delicately and lively carvings of strange water demons, a reminiscence of the Java style. There were also graceful apsaras (dancers), stone lions squatting in the four corners of the tower Gagiasimha (lion-elephant) carrying men on its back; demon faces; Garuda statues (holy birds) spreading their wings on the top of pilasters.

Rectangular blocks in the centre of pilasters were richly decorated with floral patterns and separated by hollow stripes. The engravings were delicate, smooth, and graceful, notably the S-shaped garlands of flowers and leaves. The tower was mounted on the two-tier base decorated with stylized lotus flowers. The upper base bore carvings of funny looking and graceful elephants and lions standing before a lotus-shaped throne. The lower base was carved with elephants carrying humans on their backs. Amid these elephants were small arches shaped like the faces of demons. The inside of these arches was adorned with relief motifs of humans clasping hands and bowing. They all had a cheerful look. On the two sides of each arch were two round columns. At the bottom was a squatting lion. Unfortunately, all that remains today from the tower is a stone base and the decorations in the lower part. The model and map of Tower A1 are now on display at the Champa Sculpture Art Museum in Danang and at the Vietnam History Museum in Hanoi.