Nabq Bay is pristine and peaceful, thanks in large part to its status as a protected area. Here, mingle with dozens of species of flora and fauna amid the mangroves or dive into the sparkling water to explore the nearby coral reef. "Wild" (unguided) snorkeling is popular here—happy swimmers bob along as peacefully as the undisturbed wildlife. More adventurous travelers can venture into the desert on one of the many popular quad tours.

Stunning coral reefs and turquoise waters perfect for windsurfing have made Hurghada, on Egypt's Red Sea Coast, a busy resort town. Within easy reach of the stunning Giftun Islands and the Eastern Arabian Desert, Hurghada has seen enormous amounts of development in the past decade—and yes, it does seem overrun with tourists at times. But it’s a relatively easy beach escape for Europeans, and some of the world's best diving and snorkeling sites are just offshore. Walk or catch a cab to explore the old quarter, El Dahar.

This former Bedouin fishing village is now a popular tourist destination—especially for serious windsurfers, who'll find some of the best conditions in the world off Dahab's beaches. Long known as a laid-back, backpacker-friendly town, Dahab is becoming more developed, yet retains a casual vibe. Finally, Dahab is also home to the Blue Hole, the world's most dangerous dive site. Only very experienced technical divers should attempt passage through "The Arch" here; if you're a novice diver, stay close to the surface. (Editor's note: Our list was compiled before political unrest prompted many countries to issue travel warnings for Egypt. If you're currently planning a trip to Egypt, please consider the risks and monitor your government's travel alerts.)

Located on the Red Sea Riviera and nestled between a desert and a mountain range, Makadi Bay has beautiful, white sand beaches and crystal blue water. Interesting nearby excursions include trips to Giftun Island National Park, the Monasteries of St. Anthony and St. Paul or to the ancient town of Luxor, along the Nile River. In Makadi Bay, enjoy the beach, go camel or horseback riding and listen to live music at one of the many bars.

It’s nicknamed the Eternal City for a reason. In Rome, you can drink from a street fountain fed by an ancient aqueduct. Or see the same profile on a statue in the Capitoline Museum and the guy making your cappuccino. (Which, of course, you know never to order after 11 am.) Rome is also a city of contrasts—what other place on earth could be home to both the Vatican and La Dolce Vita?

Stroll Las Ramblas and enjoy Barcelona's unique blend of Catalan culture, distinctive architecture, lively nightlife and trendy, stylish hotels. You'll find Europe's best-preserved Gothic Quarter here, as well as amazing architectural works by Gaudi. La Sagrada Familia, considered Gaudi's masterpiece, is still under construction (your entrance fee helps to fund the project). Feel like a picnic? Look no further than the rambunctious La Boqueria market, where you can stock up on local delicacies.

Everyone who visits Paris for the first time probably has the same punchlist of major attractions to hit: The Louvre, Notre Dame, The Eiffel Tower, etc. Just make sure you leave some time to wander the city’s grand boulevards and eat in as many cafes, bistros and brasseries as possible. And don’t forget the shopping—whether your tastes run to Louis Vuitton or Les Puces (the flea market), you can find it here.

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.

Edinburgh is Scotland’s capital city, renowned for its heritage, culture and festivals. Take a long walk around the centre to explore the World Heritage Sites of the Old Town and New Town, as well as all the area’s museums and galleries. Then stop for a delicious meal made from fresh Scottish produce before heading out to take in one of Edinburgh’s many events — including the famous summer festivals of culture, or the Winter Festivals of music, light and ceilidhs.