Iguassu Falls, straddling the border between Brazil and Argentina, is a breathtaking natural wonder that captivates visitors with its sheer scale and beauty. This UNESCO World Heritage Site boasts the largest waterfall system in the world, with nearly 275 individual falls cascading over a rugged landscape.

Delhi is a sprawling metropolis in North India that contains the country's capital, New Delhi. Life is abuzz and hectic here, with traffic going every which way. A huge population shuffles through Delhi's streets, alleys and food and spice-selling bazaars, and it's quite memorable to be a part of it all.

As a UNESCO World Heritage site, Stone Town boasts narrow, winding streets lined with towering stone buildings adorned with beautifully carved wooden doors, reflecting its rich history as a major trading hub.

Toulon, a vibrant port city on the French Riviera, is a hidden gem waiting to be explored. Known for its deep natural harbor, Toulon has long been a significant naval base for France, and the city's maritime heritage is still very much alive today. Visitors can explore the bustling Toulon Harbor, where yachts, fishing boats, and naval vessels coexist in a lively display of seafaring life.

Barranquilla sits near the mouth of the Magdalena River on Columbia's Caribbean side. It is a major seaport and a center of commerce, but everyone breaks loose for four days in February for one of the liveliest carnivals outside of Rio.