Castle : At the highest peak of Hora, among the steep rocks, lie the remains of the Venetian castle, built for the protection of the inhabitants of the village (it was destroyed in 1210 by pirates). From the churchyard of Ag. Constantine you can admire the unique view of the Aegean Sea. Grip the essence of Serifos, like so many others who have enjoyed amazing sunsets and sunrises from here and take them back home as a souvenir.