Segovia is located 2 hours northwest of Madrid by train. Segovia, more than anywhere else, typifies the glory of Old Castile. Wherever you look, you'll see reminders of a golden era-whether it's the most spectacular Alcázar on the Iberian Peninsula or the well-preserved Roman aqueduct, built around 50 B.C. Believe it or not, the aqueduct was still used to transport water up until the 1940's. Segovia lies on the slope of the Guadarrama Mountains, where the Eresma and Clamores Rivers converge. The narrow, winding streets of this hill city must be covered on foot to fully view the Romanesque churches and 15th-century palaces along the way.