A perfectly preserved Roman aqueduct is one of the symbols of Segovia, Spain, a city more than 2,000 years old: It's full of structures from the past performing the duties of the present, including many shops, restaurants and hotels housed in ancient buildings. The 1,800-ft/550-m aqueduct itself provides water for most of the city's fountains.
The city's other great monument is the royal castle of the Alcazar where Isabella was crowned queen of Castile. The throne room in the castle has a magnificent, handcrafted gold-leaf and ivory ceiling.
Elsewhere along the winding streets you'll find a 16th-century cathedral, several monasteries and monuments—look for the statue of the Roman wolf suckling Romulus and Remus.
Segovia is a pleasant city and an easy day trip from Madrid, just 45 mi/70 km to the northwest.