French Guiana, tucked between Brazil and Suriname on the northeast coast of South America, offers an unexpected blend of Amazonian wilderness, colonial intrigue, and French flair. As an overseas department of France, it uses the euro, speaks French, and has croissants alongside cassava bread at breakfast. Yet just beyond the cafés of Cayenne, vast rainforest stretches for hundreds of kilometers, home to rare wildlife, remote rivers, and Indigenous communities.

The dazzling capital of the Czech Republic, the explorable Prague has fittingly been nicknamed "the City of a Hundred Spires." Halved by the Vltava River and notable for architecture Baroque, Renaissance, and Gothic, visitors will find much to take in here.

The Lemaire Channel is a spectacular sight with enormous sheer cliffs falling straight into the sea. It's a narrow channel flanked by the Antarctic Peninsula on one side and Booth Island on the other. So photogenic is the channel that it's nicknamed 'Kodak Gap', and it's only once you're well within it that a way through is visible.

Ulaanbaatar, the capital of Mongolia, is a city where tradition and modern life intertwine. Nestled in a valley surrounded by mountains, it serves as the country’s cultural, political, and economic hub. The city’s skyline features a mix of Soviet-era architecture, Buddhist monasteries, and contemporary high-rises.

Lucca, a Tuscan city surrounded by remarkably intact Renaissance walls, offers more than just postcard views. Known for its quiet streets and grand piazzas, Lucca stands apart with its circular street layout, still following the lines of a Roman amphitheater from centuries ago. The walls, now repurposed as a 4-kilometer tree-lined park, are a favorite route for locals and visitors who explore them on foot or by bike, passing old bastions and panoramic viewpoints along the way.