Santorini seen from Nea Kameni (Santorini, Greece)

Thira (Greek: Περιφερειακή ενότητα Θήρας) is one of the regional units of Greece. It is part of the region of South Aegean. The regional unit covers the islands of Thira (Santorini), Anafi, Folegandros, Ios, Sikinos and several smaller islands in the Aegean Sea. Province The province of Thira (Greek: Επαρχία Θήρας) was one of the provinces of the Cyclades Prefecture. It had the same territory as the present regional unit. It was abolished in 2006.