Built sometime between the 10th and 11th centuries and located between the two abandoned settlements Metochi and Kerami near Chalki village, Agii Apostoli (also to be written as Agioi Apostoloi) is a cruciform domed Byzantine church of the rarer architectural style (referring to the two-storey design), the only design of this type found on Naxos.
The upper storey is accessed via an external staircase starting above the entrance, originally whose function was probably a chapel. In the interior surfaces only a few frescoes can be seen and they were made between the 12th and the 13th centuries. The interior walls had, at some time, undergone a whitewash cover, which later revealed the frescoes.
Agii Apostoli can be accessed either from Vourvouria or from Halki, when coming from Naxos Town. They are at a distance of approximately 16km from the island’s capital.