Freiburg was founded by the Dukes of Zähringen in 1120, and the layout of streets and squares of the rapidly prospering metropolis is still impressively reflected in today's cityscape.

Its legacy as the former imperial capital of Vietnam is just one of many reasons to visit Hue. For more than a century, the emperors of the Nguyen dynasty (1802-1945) ruled from the Forbidden Purple City, the innermost enclosure of the citadel. Today, this complex is designated as a UNESCO World Heritage site and draws millions of visitors each year.

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.

Boracay, a small island in the central Philippines, is famous for its white-sand beaches and clear turquoise waters. Despite its size, the island offers a wide range of activities, from swimming and snorkeling to paddleboarding and sailing.

Lifou Island, the most populous of the Loyalty Islands in New Caledonia, is a flat, former coral atoll with abundant vegetation and surrounded by secluded coral reefs which many say offer some of the best snorkeling in the world.