Few journeys anywhere compress twelve centuries of architecture into a single week. This route does it almost casually — here are the landmarks worth knowing before you stand in front of them.

The oldest: Asturian pre-Romanesque

While most of Iberia was under Moorish rule, the small Kingdom of Asturias built churches like nothing else in 9th-century Europe — slender, vaulted, startlingly modern. UNESCO lists them; our guides bring the history to life on the Oviedo day.

The medieval: Santillana and Santiago

Santillana del Mar is a complete medieval town, preserved down to its cobbles — see our dedicated guide. At the far end waits the granite masterpiece of Santiago's cathedral, the destination of a thousand years of pilgrims (Santiago guide).

The eccentric: Gaudí by the sea

In Comillas stands El Capricho — one of very few Gaudí buildings outside Catalonia, a sunflower-tiled villa built for an indiano who made his fortune in the Americas. The town around it is a museum of that returning-emigrant wealth.

The revolutionary: Bilbao

Gehry's titanium Guggenheim turned an industrial river into one of the world's great architecture pilgrimages — our Bilbao guide covers the museum day. Twelve centuries, one week, and the route guide threads them all together.