A 20-minute drive northeast of modern Abdera (and 28km from Xanthi) lie the ruins of the ancient town. Outdoor exhibitions display stone sarcophagi, huge urns and other imagination-spurring remnants of the town, while the foundations of temples and houses can be explored around the site.
Don't miss the 13th-century domed church that has a single aisle and the post-Byzantine three-aisle church with an earlier, octagonal baptistery. Founded in the 10th century, the church was repaired a century later. Also take a look at the middle-Byzantine fortification wall of Polystylon, laid upon the pre-existing Roman walls.