
Castillo del Inglés occupies an intriguing place in Irun's industrial and geographical heritage at the border between Guipuzkoa and Navarre within the Aiako-Harria Natural Park. Despite its evocative name, the structure is not a medieval castle but rather the remains of buildings erected by the British mining company The Bidasoa Railway and Mines Limited in the 19th century. The name derives from an English engineer who directed mining operations in the area, leaving behind the ruins of his residence perched on an elevated forest position. Today, the site remains accessible via short hiking trails through surrounding forests, offering panoramic views while serving as a curious reminder of international industrial ventures in the Pyrenean foothills.