Edmundo Sáez · CC BY-SA 4.0Coastal town
Castro Urdiales is a seaport of northern Spain, in the autonomous community of Cantabria, situated on the Bay of Biscay. Castro Urdiales is a modern town, although its castle and the Gothic-style parish church of Santa María de la Asunción, date from the Middle Ages. Its chief industries are tourism, fishing, and oil-packing of fish, especially sardines and anchovies. The Lolin and La Castreña anchovy canning factories serve as a reminder of the town's closeness to this industry and its proximity to the sea.
Although the number of people registered in the town is around 32,000, the summer population can double or even triple this figure. The town is popular because of its beaches and scenic harbor.
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Parks, beaches and places to stay that OpenStreetMap marks as dog-friendly. Many places allow dogs without it being marked: ask when you book.
No data on: train station, pool.
Data from OpenStreetMap (ODbL), extract from October 2026: we count what is mapped within the municipal boundary. "No data" means OpenStreetMap doesn't have it, not that it doesn't exist. Completed with Overture Maps (CDLA-Permissive-2.0): the pharmacies, health centres, petrol stations, banks, cash machines, food shops and schools that OpenStreetMap was missing. Town hall contact details: General Database of Local Entities (Spanish Ministry of Finance); tourist offices: each region's open registry, where it publishes one. Connectivity: Spanish Ministry for Digital Transformation, % of homes covered in June 2025.
Municipal information, services, procedures and grants.
