Piedras Blancas Tourist Office Title Castrillón Address Address: Plaza Europa, 1. 33450. Piedras Blancas Phone Phone: 985 507 677 Email Email: oitpiedrasblancas@ayto-castrillon.es Site Site: https://www.castrillonturismo.es/castrillon/ Go to Facebook Go to Instagram Piedras Blancas Tourist Office Timetable January to December: Monday to Friday: 8:00 to 15:00 h. Map Piedras Blancas Tourist Office GPS: 43.559486, -5.977221 From: How to get here »