The Hora — the hilltop capital of Sikinos — divides into two parts: Chorio, the older agricultural village, and Kastro, the fortified medieval settlement at its edge. Both are beautiful, but Kastro is the more striking. Houses with shared exterior walls form a continuous defensive perimeter around a central square, with the church of Pantanassa dominating the middle. In high summer the square fills briefly in the evenings; for most of the year it is nearly empty.
The views from the Kastro terrace extend across the Aegean in all directions — on a clear day you can see Folegandros to the west, Ios and Santorini to the south, and Naxos and Paros to the north. The walk between Chorio and Kastro takes five minutes; the walk down to Alopronia harbour is about 40 minutes on the old path.