Perched on a rugged cliff overlooking the Aegean Sea, the Castle of Skiathos (Kastro) stands as a powerful reminder of the island’s medieval past.

Built in the 14th century to protect residents from pirate invasions, Kastro became the island’s fortified capital for more than 400 years. Today, visitors can wander through the remains of its stone walls, churches and historic dwellings while enjoying breathtaking panoramic views of the sea and the wild northern coastline. The atmosphere is both dramatic and peaceful, making it one of Skiathos’ most memorable cultural experiences.