The hermitage is dedicated to John the Baptist and has been reconstructed multiple times due to fires and structural damage.
Tradition holds that visitors should ring the hermitage bell three times after the climb to bring good luck and ward off evil spirits.
The island is connected to the mainland by a narrow stone causeway that withstands intense wave erosion from the Cantabrian Sea.
Local legend suggests that Saint John once left his footprints on the steps during his journey to the island.
The site was historically used as a strategic defensive position for the Lordship of Biscay.
The island's unique geology features layers of sedimentary rock known as flysch, dating back to the Cretaceous period.
The name 'Gaztelugatxe' comes from the Basque words 'gaztelu' (castle) and 'aitz' (rock).
The Gaztelugatxe lookout provides a panoramic vantage point of the man-made stone bridge and the 10th-century hermitage situated on the rocky islet of San Juan de Gaztelugatxe. This coastal viewpoint sits along the Bay of Biscay, overlooking the winding 241-step stone staircase that connects the mainland to the island. The site is a protected biotope, characterized by rugged flysch cliffs and turbulent Atlantic waters. The location gained significant global prominence as a filming site for the television series Game of Thrones. Visitors access the lookout from the coastal road, which offers a clear perspective of the hermitage and the arched stone bridge spanning the water. The surrounding area is part of the Urdaibai Biosphere Reserve, noted for its high geological and ecological value. The lookout is positioned on a cliffside, providing a stable, high-altitude perspective of the island without requiring the full physical descent to the sea level. It is a critical stop for those wishing to photograph the formation while managing the significant elevation changes of the area.
The highest cliff edge near the designated parking area provides the best wide-angle view of the bridge and island.
Wear sturdy, closed-toe walking shoes as the surrounding cliff paths are uneven and potentially slippery.
Bring windproof outer layers, as the Atlantic coastline is exposed to strong, gusty winds regardless of the season.
Bring binoculars for a detailed view of the hermitage architecture from the lookout point.
Attempting to walk down the steep, narrow path to the island without a pre-booked entry reservation during peak season.
Access to the island and surrounding paths requires a free entry reservation during weekends, public holidays, and the peak summer season.
Maintain silence near the hermitage; respect the protected biotope status by remaining on marked paths and carrying out all trash.
