At position Pyrgi of ancient Eleftherna town, located 24km east of Rethymnon, there are the ruins of a fortified tower. This tower was built before the Roman period, so as to protect the unique entrance to the town of Eleftherna.
According to Dapper, when Quintus Caecilius Metellus attacked Eleftherna (68BC), the city managed to resist for a long time to the siege of the Romans due to its position. Then he poured tower with vinegar, until the stones were "baked" and the Romans could open a crack to get inside and conquer the city. The most dominant scenario however tells that Eleftherna was conquered after treason,
The tower was built with square stones, outside, and small stones inside. According to a second version, less acceptable, that was a medieval tower.
In the nearby village of Argoulio, near Agios Mamas, there is a beautiful mansion with Venetian architecture, possibly built by some Turk. Several similar buildings exist in Agios Mamas and Margarites.