Girona

The complete 2 km patrol walk on the Carolingian and medieval walls, lookout towers over the cathedral and the Pyrenees. Free, open at all hours, leashed dogs welcome.

One of Europe's best-preserved medieval Jewish quarters, a cool maze of stone stairways around Carrer de la Forca. Streets open to leashed dogs; the Jewish history museum excludes dogs.

The widest Gothic nave in the world (22.98 m) atop a 90-step baroque staircase, King's Landing set in Game of Thrones. Steps and square accessible on leash, interior closed to dogs.

The ochre and coral facades hanging over the Onyar, seen from Eiffel's iron bridge (1877). Bridges and banks open to leashed dogs, official canine itinerary just upstream.

40 hectares of monumental plane trees between the old town and the Ter, Catalonia's largest urban park, with two of the city's five fenced dog runs. Deep shade even in high summer.

The green valley behind the cathedral, gateway to the Gavarres massif, with an official canine itinerary at its mouth, springs and a Romanesque monastery. Holm-oak forest 20 minutes on foot from the Barri Vell.