source of inspiration to Walt Disney, and where Queen Isabel promised Columbus the financial backing he needed to discover America. On the south-east extreme is the world renowned Roman Aqueduct, the largest and best preserved of its kind anywhere, which served as the mintmark on all coins struck in the city from 1455 to 1864. The tallest building in Segovia is still the 16th-century Cathedral, a prominent landmark as one approaches from any direction.