From Shoreditch’s swaggering style to Camden’s punky vibe and chic Portobello Road, London is many worlds in one. The city’s energy means that no two days are the same. Explore royal or historic sites, tick off landmarks from your bucket list, eat and drink in exclusive Michelin-starred restaurants, enjoy a pint in a traditional pub, or get lost down winding cobbled streets and see what you stumble across – when it comes to London, the possibilities are endless.

“Must love winter sports” could be the slogan of this town at the base of Northern Italy’s Dolomite Mountains. Skiing, snowboarding, tobogganing, and every other way of gliding across the snow is the favorite topics here, even when summer is in full tilt and Nordic walking and other high-altitude activities get added to the agenda. Two gondolas and a funicular on the edges of town whisk you up to the nearby ski resorts, which connect to a dozen or so more nearby. That’s literally hundreds of miles of easily accessible ski trails with one lift ticket. Back down in the valley, the après-ski atmosphere takes over the cobblestone streets.

High in the Dolomites, Cortina d'Ampezzo boasts 140 ski runs and over 50 miles of cross-country pistes. Beloved for decades by society types for its après-ski scene, Cortina lies at the center of the Valle d'Ampezzo and has been featured in a number of films, including "Cliffhanger" and "For Your Eyes Only".

Catania has been a prize of many empires over the centuries, from Greeks to Romans to Arabs to Normans to Spaniards (to name a few). But its citizens have a more dangerous enemy right in their backyard—Mount Etna, Europe's largest and most active volcano, which destroyed the city with earthquakes and lava flows in 1693. Look closely at the baroque buildings dating from after the eruption—you'll notice a creative use of lava.

Golden domes, imposing white facades, and landscaped green spaces dominate the riverside streets of Rostov-on-Don. Though rich in history and culture, the port city is far from a relic—lively markets, theaters, and sports attractions give the metropolis its modern edge.

Conquering New York in one visit is impossible. Instead, hit the must-sees – the Empire State Building, the Statue of Liberty, Central Park, the Metropolitan Museum of Art – and then explore off the beaten path with visits to The Cloisters or one of the city’s libraries. Indulge in the bohemian shops of the West Village or the fine dining of the Upper West Side. The bustling marketplace inside of Grand Central Station gives you a literal taste of the best the city has to offer.