Cádiz, Spain

Cádiz is a coastal city of roughly 115,000 residents on a peninsula in southwestern Spain. Founded by the Phoenicians around 1100 BC, it ranks as the oldest continuously inhabited city in western Europe. The 1722 Cádiz Cathedral, topped by a golden dome, earned the nickname "Cathedral of the Americas" because trade with the New World funded its construction. The 1855 La Pepa Bridge stretches 3,092 meters across the bay and ranks among the longest bridges in Spain. The 18th-century Tavira Tower, the city's highest point, still projects live images of the streets through its working camera obscura.