Wrocław, Poland

Wrocław's market square spans 3.8 hectares—nearly identical to Prague's Old Town Square—yet sees 60% fewer tourists annually, with 2.5 million visitors versus Prague's 6 million. Its 112 bridges connect 12 islands across the Oder River. Hidden throughout the city, 380 bronze dwarfs form a scavenger hunt that started as a 1980s anti-communist protest symbol.