Gaztelugatxe is an islet on the coast of Biscay. On top of the island stands a hermitage, dedicated to John the Baptist, that dates from the 10th century, although discoveries indicate that the date might be the 9th century.
In the year 1053 it was donated, by don Íñigo López, Lord of Biscay, to the monastery of San Juan de la Peña near Jaca in Huesca. Medieval burials from the 9th and 12th centuries have been found on the esplanade and in the hermitage.
In 1593 it was attacked and sacked by Francis Drake. Among other incidents, it has caught fire several times. On November 10, 1978, it was destroyed in one such fire. Two years later, on June 24, 1980, it was re-inaugurated. The hermitage belongs to the parish of San Pelayo in Bakio.
The hermitage also houses votive offerings from sailors who survived shipwrecks.
The hermitage is accessed by a narrow path, crossing the solid stone bridge. According to legend, after the slightly strenuous climb to the top of the crag one should ring the bell three times and make a wish.
HBO filmed scenes for season 7 of its fantasy series Game of Thrones at the islet. Gaztelugatxe stood in for Dragonstone, with a digitally created castle on top of the islet.
References:Saint-Georges de Boscherville Abbey is a former Benedictine abbey. It was founded in about 1113 by Guillaume de Tancarville on the site of an earlier establishment of secular canons and settled by monks from the Abbey of Saint-Evroul. The abbey church made of Caumont stone was erected from 1113 to 1140. The Norman builders aimed to have very well-lit naves and they did this by means of tall, large windows, initially made possible by a wooden ceiling, which prevented uplift, although this was replaced by a Gothic vault in the 13th century. The chapter room was built after the abbey church and dates from the last quarter of the 12th century.
The arrival of the Maurist monks in 1659, after the disasters of the Wars of Religion, helped to get the abbey back on a firmer spiritual, architectural and economic footing. They erected a large monastic building one wing of which fitted tightly around the chapter house (which was otherwise left as it was).