Dome and bell tower of St. Gerasimos Christian church, Thira, Santorini (Thira), Cyclades islands, Mediterranean, Europe

architecture belfry bell tower bell tower blue building exterior christian christianity church churches cross crosses crucifix cyclades day daytime dome domes exteriors greek islands house of worship landmark landmarks mediterranean nobody ocean outdoors outside place of worship religious santorini sea st gerasimos symbol symbolic symbols thira tower towers travel travel destinations water white turret sirius collection