Agora was called in ancient Greek city-market area, which is a place of assembly of Common (also called Agora). Usually located in downtown areas, it was the central market town, divided by various kinds of goods to the "circles" and government agencies. As a rule, the Agora was surrounded by arcades with craft shops, temples, and sometimes statues erected around the perimeter of the square. Often agora have quadrangular shape in the projection, are arranged at the edges of the column. The Agora was the many shops of various kinds. Very often, this area was the economic and administrative center of the city.

Agora in Side is located near the Museum of Side. To this day survived by her only a few columns, as well as the foundation of an ancient temple.

In ancient times there were two Side agora (square). One of the areas still exists today. Side was a major trading center. It has a huge slave market. Especially Agora in Side was famous for its beautiful women-slaves.

Preserved Agora is located in the north-west of the Colonnade street and almost merges with the stage of the theater. Entrance to it is through the gate with the name propilion (Colonnade monumental entrance), opposite the present museum. It is surrounded on all sides by granite columns that have in their pedestals warrant "Atik-ion," and on top of the order, "Corinth." After architrave sloping wooden roof, and in the four corners of the agora placed pedestals with statues (eksedry).

For southwestern eksedroy merging with the scene of the theater, it was a monumental semi-circular design - toilets (latrium) covered vault. This is the only sufficiently preserved in Anatolia and very beautifully decorated old toilet. It has twenty-four seats, the walls were covered with marble, and on the floor - mosaic. Sewage waste water was under the stone toilet seat and in front of it is an open water canal with fresh water, which ensures purity.

Agora at the time had two entrance gates, which were closed by walls. Agora in Side and all other constructions were built there in the second century BC Her specially built near the theater, on the recommendation of Vitruvius - Roman architect, to the audience of the theater could take refuge during sudden rainfall.

Near its south-eastern wall of a road reaching to the second agora of the city. Shops located on the edge of the street destroyed during the construction of the wall Filipus Atius.

At the center of the square-shaped square, you can see traces of a round temple of the goddess of fortune and chance Tyche. It is, according to legend, the rules of the fate of the city. In honor of the goddess was erected a temple to a place of worship, located around the columns with cornices.