Thirasia.

Thirasia, once part of ancient Thera before the devastating volcanic eruption that shaped Santorini, offers visitors a glimpse of how the Cyclades were before mass tourism. This small island, facing the famous caldera of Santorini, preserves an authentic way of life that has largely disappeared from its more famous neighbor. The island's main settlement, Manolas, perched on the caldera's edge, offers equally spectacular views as Santorini but in peaceful solitude. The island's architecture features traditional cave houses carved into the volcanic rock, while abandoned settlements like Agrilia tell stories of past prosperity. Despite its small size, Thirasia boasts several important Byzantine churches and monasteries, including the monastery of the Assumption of the Virgin Mary. The island's few beaches, accessible by boat or donkey paths, remain wonderfully undeveloped, while local tavernas serve authentic Cycladic dishes using ingredients from the island's terraced gardens. The absence of hotels (most accommodation is in traditional guest houses) and limited tourist facilities has preserved Thirasia's traditional character, making it a perfect escape for those seeking to experience the authentic Cyclades.