Rising from the ruins of the Aztec capital, Tenochtitlan, Mexico City offers a unique collision of contemporary city life and historic preservation. World-class museums, restaurants and parks rub shoulders with the remains of several cultures. The nightlife, the shopping and the history make it a must-see regardless of your travel style.

With nine bays and 36 beaches, Huatulco is ideal for anyone who loves the sun. It's not an overdeveloped resort town, but the hotels are comfortable—even luxurious. Ecotourism is gaining in popularity, so take a break from sunbathing and try river rafting or a hike through the jungle.

Plan to cross many bridges when in Cork. Ireland's third-largest city began life as an island and now spans both banks of the River Lee, with watery channels running beneath some of its main thoroughfares. The best way to experience this hilly southern seaport is on foot, following the signposted walking tour past St. Finn Barre's Cathedral and the riverside quadrangle of University College up the hill to red and white Shandon Church. Along the way, you'll meet plenty of the city's talkative residents.

Lively Antwerp is a hidden gem. Its medieval streets, Renaissance monuments and vibrant nightlife tend to be overshadowed by its reputation as centre of the diamond trade and as the world's fifth-largest port. Cycling is a popular choice for getting around this stylish Flemish city. See thousands of Old Masters at the Royal Museum and Rubens House. Experience the bustle of life at the Grote Markt. Marvel at the art and architecture of the still unfinished Cathedral of Our Lady, started in 1351.

Comprising the provinces of Alicante, Valencia and Castellon, Valencian Country basks on the Mediterranean Coast in central southeastern Spain. The densely populated area is a prime tourist destination, with Valencia city having the reputation as the place the Spanish go to party. The area offers budget resorts, such as those on the Costa Blanca, to upscale villas in elegant Valencia. Small villages are scattered through the mountainous inland region, but it's the coast that remains the main draw.

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.

The largest city in Switzerland is a major contemporary art and shopping destination. Important artworks are displayed in the Kunsthaus and the Rietberg Museum. Those who consider shopping an art can hone their skills along Bahnhofstrasse and Niederdorf. Chagall's stained-glass windows in the Fraumünster amaze. Zurich's 500 clubs and bars, including several in swimming pools, pulse with life till the early hours. This city on Lake Zurich has excellent public transport and a free bike-hire system.