The theater lies in the center of ancient Ambracia, at a small distance from the late Archaic temple of Apollo and is built on an artificial slope. The orchestra, parts of the cavea and the parodoi, and the western part of the stylobate of the proscenium, have been uncovered. The cavea had stone seats and was divided in three diazomata (sections). The orchestra had the shape of a perfect circle with a diameter of 6.70 m.
On the basis of its architectural form, the theater is dated to the end of the 4th or the beginning of the 3rd century B.C. The cavea was built on an artificial fill, over the foundations and mosaic floors of earlier baths dated to the middle of the 4th century B.C.