The remains can be found in a prime location dedicated to the local main god Apollo. This essentially means, the sanctuary is positioned towards the southern shore, in between the flat area of two hills, and on the eastern side of the narrow isthmus surrounded by the city walls, where the actual residential area is located.
This sanctuary was built around the 2nd century BC, and covers an area of approximately 36.00 x 36.30 meters. It has a Doric order peristyle with an open terrace and cylinder-shaped altars where religious ceremonies were often held. The entrance to the sanctuary can be found in the northern partof the area.
Two inscriptions have been found from the terrace of the sanctuary. One of them is the honorary inscription for General Teisias, dated to the first quarter of the 2nd century BC. The other is an inscription on a statue dedicated to Apollo Pithios and the priest of Apollo Kedrieus which provides further evidence for their existing cult in Kedreai. The Apollo Sanctuary, surrounded by a high-quality wall, was the most important place of worship in Kedreai. This significant cult site, which simultaneously served as a communal gathering spot for the locals, maintained its religious purpose during Christianity with the addition of a basilica on top of a peristyle in Late Antiquity.