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.

You've probably heard that Guinness tastes better in Dublin (fresh from the factory), but what you may not know is that Dublin is a perfect destination for the whole family. No, we're not suggesting you let the kiddies drink a pint. Instead, take them to the Dublin Zoo, to feed the ducks in Stephen's Green or on a picnic in Phoenix Park. Scholars enjoy walking in the literary footsteps of such writers as Yeats and Joyce, while discerning shoppers have their pick of designer boutiques.

The prophet Mohammed's birthplace is Islam's spiritual center and is strictly off-limits to non-Muslims. The pillars of Islam state that all Muslims with the means must undertake Hajj, a pilgrimage to Mecca, once in their lifetime. Those who visit the holy city are rewarded not just by proximity to landmarks and religious sites crucial to the religion, such as the Masjid Al Haram (Holy Mosque), the Mountain of Light, the Black Stone and the Well of Zamzam, but with the forgiveness of all their sins.

The shining jewel of Qatar, Doha is a multicultural city, home to most of the country's population as well as expatriate communities from a range of origins. Shopping abounds in the city's plentiful malls, while the Corniche impresses visitors with picturesque architecture and dazzling views of the harbor. Doha boasts myriad cultural facilities, including the futuristic Education City and the National Museum.

Dubai is a destination that mixes modern culture with history, adventure with world-class shopping and entertainment. Catch a show at the Dubai Opera, see downtown from atop the Burj Khalifa and spend an afternoon along Dubai Creek exploring the gold, textile and spice souks. If you’re looking for thrills, you can float above the desert dunes in a hot air balloon, climb aboard a high-speed ride at IMG Worlds of Adventure or skydive over the Palm Jumeirah.

Walk the Freedom Trail the first time you visit Boston and you'll quickly get a sense of this coastal city's revolutionary spirit and history. But make sure you also explore some of Boston's fine museums (try the Isabella Stewart Gardner, featuring masterpieces displayed in their collector's mansion) and old neighborhoods (like the North End, Boston's Little Italy). You can't claim to have experienced real Boston culture, though, until you've watched a Red Sox game from the bleachers.

Famous as the home of Yankee Stadium, elevated trains, and dense apartment blocks, the Bronx is also the greenest of New York City's boroughs. Visit the gorillas at the famous Bronx Zoo or wander through the 50-acre forest at the New York Botanical Garden. Pick up some gourmet foods on Arthur Avenue, the Bronx's Little Italy, and have a picnic at Van Cortlandt Park, which features two square miles of boating, horseback riding, tennis, and the oldest public golf course in the United States.

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.

Atlanta has been dubbed everything from the "capital of the new South" and "the next international city" to "the best place to do business." It's also a great place to visit. Fueled by the prosperity of local mega companies like Coca Cola and Holiday Inn, the prestige of hosting the 1996 Summer Olympic Games and the energy of young upwardly mobile types who have migrated to the city in droves - Atlanta is on fire. And this time it's a good thing. From world-class restaurants and a myriad of cultural attractions to a hip nightlife and sporting events galore, the city is cosmopolitan in every sense of the word. But Atlanta has also managed to maintain its historic character. Stop by the Atlanta History Center or visit the Martin Luther King Jr. Historical Site, a moving tribute to an American icon. Browse through the former home of famous author Margaret Mitchell or pop into the Jimmy Carter Library and Museum for details on the life and times of the former president and his family. Whether you choose modern urban endeavors or old southern pleasures, Atlanta will not disappoint.