The Great Barrier Reef stretches along Australia’s northeast coast, forming the largest coral reef system on Earth and one of the planet’s most complex living ecosystems.

There's plenty to explore in this vibrant Caribbean paradise. Visit one of the island's many beaches, including Bachelor's Beach, Te Amo Beach, and Sorobon Beach, take a stroll through the Bonaire Arts and Crafts Market, or visit Washington-Slagbaai National Park, where you'll likely catch a glimpse of many of the island's native birds and reptiles.

Progreso, a coastal city in the state of Yucatán, offers travelers a relaxed atmosphere with strong ties to the sea. Founded in 1871 as a port to support trade in the region, Progreso now welcomes both cargo ships and cruise liners to its shores. Its most defining feature is the Progreso Pier, one of the longest in the world, stretching over 6 kilometers into the Gulf of Mexico.

A shallow lake at over 3200 feet above sea level in central west Kenya, it is the home of the Kamasya and Njamus who raise cattle and crops and fish for tilapia. The lake covers about 50 square miles.

El Calafate, a small town in southern Patagonia, serves as the main gateway to one of Argentina’s most spectacular natural wonders, the Los Glaciares National Park. Sitting on the shores of Lake Argentino, El Calafate was once a quiet outpost known mainly for sheep farming and the hardy calafate berry. Today, it attracts travelers from around the world who come to witness massive ice formations and the shifting blue walls of nearby glaciers.