The Agora with the foundation of the round temple

In the second half of the 2nd century A.D., below the theatre and in the immediate vicinity of the harbour (now silted up), a modest agora measuring 31 x 31 metres was erected with porticoes on three sides.
In the middle, the agora, paved with limestone slabs, was dominated by a round temple, presumably in honour of the goddess Tyche. The foundation of this temple has been preserved.

In the second half of the 5th century, a three-nave basilica was built on the now safely dilapidated Roman agora using the outer walls. For the construction of the basilica, the colonnades and the round temples were removed and the ground raised. Thus the original mosaic as well as the foundation of the round temple under the church floor was preserved.