The numerous ancient towers scattered across many Aegean islands (Amorgos, Andros, Thasos, Ikaria, Kea, Kythnos, Mykonos, Naxos, Serifos, Sifnos, Skiathos, Paros, Tinos, etc.) and the mainland, constitute a particular type of ancient building with various uses. The vast majority of the towers are dated to around the mid-4th c. BC and up to the first quarter of the 3rd c. BC. Despite their numbers and dispersal, they present common architectural features, such as their circular, square or rectangular plan and their sturdy construction of local stone.