The southern France city of Toulouse is a study in contrasts. Visit the Academie des Jeux Floraux, the oldest literary society in the western world, as well as the Galerie du Chateau d'eau, the world's first photography museum. Stroll the Garonne, before visiting France's most beautiful pipe organ at the Saint-Sernin Basilica. Yet for all its medieval architecture, Toulouse is a modern city, home to the European aerospace industry, as well as bars and restaurants in bustling Place du Capitole.

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.

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.

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?

Amsterdam is truly a biker’s city, although pedaling along the labyrinthine streets can get a little chaotic. Stick to walking and you won’t be disappointed. The gentle canals make a perfect backdrop for exploring the Jordaan and Rembrandtplein square. Pop into the Red Light District if you must—if only so you can say you’ve been there. The Anne Frank House is one of the most moving experiences a traveller can have, and the Van Gogh Museum boasts a sensational collection of works.

Copenhagen is one of Europe’s oldest and most popular cities. It’s also one of the cleanest and most metropolitan. The dynamic Danish capital features progressive modern architecture, the must-visit Tivoli Gardens amusement park, stunning palaces, and all the activities and amenities you would expect in a world-class destination. Explore the canals and pretty narrow streets, appreciate beautiful old homes, and find great shopping and people watching on The Ströget.

With the dramatic backdrop of 12,200-foot Mount Teide towering behind the resort, Adeje makes an unforgettable holiday destination. Adeje is less than two miles from the boisterous nightlife of Playa de las Americas, allowing visitors to choose whether to take it easy or to party. Bake in the sun on black volcanic sands before cooling down at a water park, such as popular Siam Park, or out windsurfing. Barranco del Infierno, Hell's Gorge, is a lush oasis, perfect for hiking.