TheAaltar, situated to the east of the temple erected in the mid 2nd century B.C. It is considered to be a model of the great Altar of Zeus at Pergamum and was surrounded by a portico with columns. A little further on stands a propylon or monumental gateway with four columns in front and rear dating from the 1st century B. C.
The decorated reliefs of the altar represented scenes from the battle of Gods and Giants. At the time of the building the front of the altar was paved with stones also a stoa in the Doric style was built on top of the 7 meters high terrace was situated to the south of the temple. It was 78.40 meters long and had 32 number of the row in columns which was faced the valley of Meander. In the stoa people of the city did their daily jobs, walked and looked at the view and the sea. There was the temple on the rear facade of the stoa.