Salamanca
Salamanca, in northwestern Spain, is the capital of Salamanca province, part of the Castile and León region. With a history dating back to the Celtic era, it's known for its ornate sandstone architecture and for the Universidad de Salamanca. Founded in the 1100s and a key intellectual center in the 15th-16th centuries, the university continues to add to the city's vibrancy with its international student population.