In 1831, Charles Darwin sailed to South America aboard the H.M.S. Beagle. On the return voyage across the Pacific, the vessel stopped on a small group of islands far off the Ecuadorian coast, changing the course of human scientific endeavour and self-understanding forever. Fascinated by the unique wildlife on the islands, Darwin collected biological specimens and studied them over the next 30 years. His findings led to the formulation of the scientific theory of evolution by natural selection. This small group of islands and their one-of-a-kind wildlife are to thank for one of humanity's most remarkable discoveries. And today, almost 200 years later, they remain a source of endless fascination and a favourite travel destination for scientists, nature and wildlife enthusiasts, scuba divers, and anyone interested in the wonders of the natural world.

Just 250 kilometres north of the polar circle, the summer sun shines for almost two months without going down, while the polar nights offer the most intense Northern Lights that can be seen. In Kiruna, the northernmost city in Sweden, you can go slalom skiing until midsummer or spend the night in a magnificent hotel built from ice. The phrase "kingdom of contrasts" is overused, but Kiruna truly embodies it.

Hakuna matata is Swahili for "no worries", and this is exactly the spirit that fills the atmosphere of Zanzibar —the Spice Island of Tanzania. A heavenly world sprinkled with charming colonial buildings, white sandy beaches, colourful markets, and flavours of exotic cuisines from all over the world.

More than 26 miles of lakefront frame Chicago's stunning urban skyline. Here in the heart of the Midwest, the nation’s third-largest city boasts soaring skyscrapers and colorful neighborhoods against a backdrop of sandy beaches and beautiful parks. This cosmopolitan playground bursts with things to do. Sightseeing options range from Chicago icons — such as Millennium Park’s Cloud Gate, Grant Park’s Buckingham Fountain and Navy Pier’s Ferris wheel — to fascinating history and architecture tours.

Cambridge is a city oozing with history and tradition at every turn. The cityscape is dominated by the university, with its 31 colleges and their extensive green gardens, known as the "Backs", spread throughout the city. Throngs of students making their way to class or lounging by the banks of the River Cam, books in hand, as punters lazily float by, enhance the academic feeling of this centuries-old centre of scholarship, along with the numerous fascinating museums and cultural events that take place in the city.