London is among the world's most visited cities, with countless attractions and a history stretching back two millennia. Visitors will discover historic iconic structures like Westminster Abbey, Big Ben, and Tower Bridge, as well as recent marvels such as London Eye, a giant observation wheel that offers breathtaking views of the whole city.

Namibia, in southwestern Africa, is a land of dramatic landscapes and striking contrasts. From the towering sand dunes of the Namib Desert to the rugged mountains and deep canyons of Damaraland, the country offers some of the continent’s most unique scenery.

Located on the coast of Queensland, Australia, Airlie Beach is a favorite stop for cruises along the Great Barrier Reef. This coastal paradise offers spectacular beaches and easy access to the Whitsunday Islands, Conway National Park, and, of course, the Great Barrier Reef.

The capital of Crete, Heraklion is a Greek port city and a popular stop on Mediterranean and Greek cruises. The city is an historical marvel, replete with archaeological wonders and remnants of the region's past. Highlights include the Heraklion Archaeological Museum, the Rocca a Mare Fortress, the Venetian Loggia, and just past the city limits, the Palace of Knossos.

Guanajuato, a UNESCO World Heritage City nestled in the mountains of central Mexico, is a place where history is built into every hillside alley and underground tunnel. Today, visitors can still tour La Valenciana Mine, where centuries-old tunnels and original mining equipment offer a glimpse into the city's wealth-driven past. The nearby Templo de San Cayetano, built by mine owners in the mid-1700s, is a stunning example of baroque design, lined with gilded altars and intricate woodwork.