Castro Urdiales, Spain

Colonia (Roman)

Connects Castro Urdiales, Spain to: Sardinia | Sidon, Lebanon | Sétif, Algeria | Wels, Austria | Ston, Croatia

Cantabrian mythology

Connects Castro Urdiales, Spain to: Rome, Italy | Seville, Spain | Cádiz, Spain | Bruges, Belgium | Deva, Romania

Cantabria

Connects Castro Urdiales, Spain to: Spain | Lobos, Argentina | Virgen, Austria | Cantabria | Polanco, Mexico

Justo José de Urquiza

Connects Castro Urdiales, Spain to: Spain | Brazil | Argentina | Buenos Aires, Argentina | Uruguay

Kingdom of Navarre

Connects Castro Urdiales, Spain to: Spain | Navarre | San Sebastián, Spain | Pamplona, Spain | Soule

Defensive towers of Cantabria

Connects Castro Urdiales, Spain to: Spain | Cantabria | Hoyos, Spain | Torreón, Mexico | Cartes, Spain

Alfonso VIII of Castile

Connects Castro Urdiales, Spain to: Spain | Portugal | Denmark | Santiago, Chile | Bordeaux, France

Edward the Black Prince

Connects Castro Urdiales, Spain to: London, England | France | Paris, France | Oxford, England | Cambridge, England

Bilbao

Connects Castro Urdiales, Spain to: Portsmouth, England | Antwerp, Belgium | Asturias | Burgos, Spain | San Sebastián, Spain