Aqueduct of Segovia

A Roman aqueduct built around 100 AD, striding through the heart of Segovia on two tiers of granite arches, up to 28 m high, built without mortar. It carried water to the city until the 20th century.

Walk up the steps beside it for views, then through the old town to the Gothic cathedral and the Alcázar, a fairytale castle on a rocky point that is said to have inspired Disney. Try the local roast suckling pig (cochinillo). Segovia is 30 minutes by high-speed train from Madrid.