Around 1360, because of the continuous pirate raids, the Skiathians had to abandon the ancient town of Skiathos and establish a new town in Kastro spanning roughly 25.000m².

Kastro is less than an hour’s drive but the car cannot really
reach it. However, there is a spot where you can park your vehicle
and then take a half-hour walk up to the old town of Kastro.
That said, the best way to approach it is through a kaiki boat
from the old port of Skiathos, so you can enjoy the ride and
view.

Around 1360, because of the continuous pirate raids, the Skiathians
had to abandon the ancient town of Skiathos and establish
a new town in Kastro spanning roughly 25.000m2. It is
a rocky peninsula on the north of the island, a natural fortress
hanging above the sea, since it is built on top of an imposing
rock with panoramic view. That’s why it’s surrounded by a weaker
wall on its three sides facing the sea, while on the side where
it connects to the land strong sky-high walls were built, with
cannons and crenelations scattered all over. The fortress’ point
of contact with the land was a wooden drawbridge connecting
its gate with the butte across it. There was a rooftop on top of
the gate that had crenelations and a box machicolation.