Rome

Rome's historic center holds more UNESCO-listed monuments than any other city in Europe. The Colosseum alone draws 7 million visitors each year, more than double the 1.3 million who visit the Anne Frank House at #4 Amsterdam. The Vatican Museums add another 6 million annually, cementing Rome as Europe's most culturally dense destination — a city where every cobblestone tells a story spanning over 2,700 years since its founding in 753 BC.