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Photo: Klearchos Kapoutsis from Santorini, Greece, CC BY 2.0 via Wikimedia Commons
A well preserved Byzantine church dated 1115.
The Panagia Episkopi is a middle-Byzantine Greek Orthodox former cathedral, now church, on the island of Santorini (Thira), in the Cyclades region of Greece. It is also called Panagia tis Episkopis or Church of Episkopi Thiras. According to an old, now almost completely destroyed inscription, the building of the church was commissioned by the Byzantine Emperor Alexios I Komnenos at the end of the 11th century, and took the place of a previous three-aisled early Byzantine-era basilica. The church was dedicated to the Panagia ("All-holy"), a Greek Orthodox appellation for the Virgin Mary. The second part of the name (Episkopi) means "episcopal". The Panagia Episkopi was the seat of the Orthodox diocese of Santorini until 1207 and again from 1537 to 1827.
© OpenStreetMap contributors
A half spherical radar dome on top of a tower on the highest point of the island, that serves as a landmark for navigation and hikers in the area. It can be seen from almost everywhere on the Santorini archipelago in good weather conditions. The radar installation itself can't be visited.
Ιερά Μόνη Προφήτου Ηλία Θήρας
Monastery on the hike from Imerovigli to Kamari. It is a prominent landmark on the island, but more often than not closed. Some of the architecture can be admired from outside the monastery walls, fortunately. It's rather off the beaten track, and not worth making a detour for.
Historic wine cellar converted into a museum and arts gallery.
A small folklore museum with a collection of beautiful and valuable icons, sculptures, relics, vestments, books and other objects related to the liturgy and the church.
The ruins of a Venetian castle erected for defensive purposes that once served as the administrative centre for the island.