Originally built in the early Christian period as a three-aisled basilica, it was converted into a cruciform, domed church in the ninth century.
Sources:
Panagia Protothronos, Chalkio [Naxos]
Nahegelegene Fundstellen
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Church of Panagia Protothrone, Chalkios
Early Christian church - Naxos. -
Ag. Isidoros in Rachi
Early Byzantine church. -
Ierapetra
Since the Minoan period -
Tsikalario on Naxos, Necropolis
Gemetrical cemetery