The Ancient Agora of Kos is an extensive open archaeological site in the centre of Kos Town, covering several blocks with the ruins of the main public square, stoa (covered walkway), temples, and administrative buildings of ancient Kos. The site was excavated and partly reconstructed during the Italian administration of the Dodecanese between the wars.
Access is generally open and entry is free (though this may change). The ruins are best understood with a guidebook or audio guide; the site is not extensively labelled in English. The most impressive remains are the long stoa colonnade, partly reconstructed, which gives a sense of the scale of the ancient commercial district. The site is surrounded by the modern town — a striking juxtaposition.