Foz do Iguaçu, Brazil

With a population of just 190,123, Foz do Iguaçu is a far cry from the glitz and glamour of Rio. The economy here is squarely focused on tourism - particularly the famous Iguaçu Falls - and the city is characterized by cultural diversity, with around 80 nationalities represented. However, the region's location on the borders of Argentina and Paraguay has also made it a hotspot for smuggling and drug trafficking, leading to high rates of violent crime. Bureaucracy is a persistent headache, with the city's name even sparking debate over spelling reforms. Overall, Foz do Iguaçu may appeal to adventurous tourists drawn to its natural wonders, but as a place to settle, it's likely to be a divisive choice.