Ávila

Walled old town Ávila's wall is complete, and that is rare. The circuit runs 2,516 meters with 87 rounded towers and nine gates, and from the plain outside it still closes around the old town in one unbroken line of stone. You can walk about 1.7 km along the top, entered at set points with a ticket, which gives the best views over the rooftops. Inside, the town is quieter and plainer than Toledo, with Romanesque churches, convents and stone mansions rather than showpiece squares. For the classic view of the whole circuit, walk out across the river to the Cuatro Postes viewpoint at sunset.