If you find yourself in Rotterdam, there's a strong chance you've arrived by water. This popular port city (the second largest in the Netherlands) has gone through an architectural renaissance since World War II, with daring, innovative structures dotting the city (cube houses!) and defining its skyline. Café culture is on the rise here, so grab yourself a table and a cup.

Mist, research stations, and penguins are just a few of the things that define the South Shetland Islands, an archipelago off the coast of Antarctica. These 11 Antarctic islands, most notably King George Island, have served as a base for researchers from Chile, Argentina, and a variety of other countries. The archipelago has also become a popular cruise destination for tourists to the Antarctic region.

Merzouga, a small village located in southeastern Morocco, is the gateway to the stunning Erg Chebbi dunes, one of the most iconic desert landscapes in the world. These towering sand dunes, which can reach heights of up to 150 meters (492 feet), offer an unparalleled opportunity for adventure and exploration. The contrast between the golden sands and the clear blue sky creates a breathtaking panorama that is perfect for photography and desert excursions.

Tucked away in the heart of the Pacific Ocean, Nauru is one of the world’s smallest and least visited countries being an island nation just 21 square kilometers in size, with a population under 10,000. But its compact size makes exploring simple and rewarding. Visitors can circle the entire island by car in under an hour, taking in stunning ocean views, remnants of World War II bunkers, and clusters of colorful homes that speak to Nauru's resilient spirit and layered past.

A frequent stop for Caribbean cruises, this Central American destination will delight you with local flea markets, museums, and delicious eats.