Home to two of America's most prestigious universities, Cambridge exudes a certain intellectual quirkiness. A mix of historical haunts, student hang-outs, alternative art and culture venues, vintage clothing shops, bookstores and ethnic restaurants, the city is, well, really cool. Although it is located just across the Charles River from Boston, Cambridge has a distinct vibe that is noticeable immediately. Start at Harvard Square, a hub of activity and mishmash of trendy stores, outdoor cafes and colorful local characters. Pick up a walking tour map at the visitors information booth in the center of the Square. The route will take you past many important landmarks including the Mount Auburn Cemetery, Tory Row and the Longfellow National Historic Site. Harvard University offers student-led tours through the illustrious buildings and monuments of its sprawling campus. Art and architecture buffs should meander around the M.I.T campus, which includes outdoor sculptures by masters such as Picasso and 20th-century buildings designed by modern greats like Eero Saarinen and I. M. Pei. Along the way, browse through bookstores, stop to watch street performers and grab a coffee at an outdoor café to take in all this captivating city has to offer.

Providence seamlessly blends the old and the new with historic attractions, museums and theaters situated alongside more recent additions like the scenic RiverWalk, outdoor skating center, downtown mall, convention center, hotels and acclaimed restaurants. Wander back in time while strolling down historic Benefit Street or explore Roger Williams Park Zoo with the kids. Tantalize your taste buds on Federal Hill or tour the city from a unique perspective on an authentic Venetian gondola.

Visit Provincetown and have a blast enjoying some of Cape Cod’s best beaches (Race Point Beach and Herring Cove Beach are favorites of TripAdvisor travelers). Plenty of cool boutiques, restaurants and art galleries give this town a fun and funky vibe. It’s an exceptionally LGBT-friendly destination as well. One tip: if it’s high season, take the ferry or a quick flight from Boston (unless you enjoy spending hours sitting in traffic).

Don your walking shoes, breathe in the ocean air and set out to discover this picturesque maritime town. You can join one of several organized walking tours or explore on your own. Portsmouth is filled with old homes and museums, and you'll have your pick of fascinating historic sites. Climb aboard the USS Albacore, a retired U.S. Navy submarine offering tours and exhibits. View an 18th-century garden, striking stairway and period furniture at the Moffatt Ladd House, the home of William Whipple, a signer of the Declaration of Independence, or follow a costumed guide through the John Paul Jones House, home of the Revolutionary War naval hero. For a broader look at the city's history, visit Strawbery Banke Museum, where over 40 buildings have been assembled to depict Portsmouth life from 1695 to 1950, complete with costumed actors. If you know architecture, Portsmouth's array of Colonial, Federalist and Neo-classical styles will dazzle you. Weary of walking? Sit down for a meal at one of Portsmouth's fine eateries or relax on a narrated harbor or whale-watching cruise.

The Atlantic crashes on a coastline strewn with quaint harbors, windswept beaches, glorious dunes and blinking lighthouses. Explore Cape Cod National Seashore, bike past cranberry bogs on the Rail Trail or saunter around Sandwich, the Cape's oldest town. Many areas are architectural and culinary gems - full of weathered shingles, whaling captains' mansions, chowder shacks and upscale dining delights. Don't miss Woods Hole Oceanquest, famed Martha's Vineyard or charmingly upbeat Provincetown.

Here in the heart of Rhode Island’s “Classic Coast,” you can choose your own adventure. Soak in miles of spectacular coastal scenery, study authentic Colonial and Gilded Age architecture, saunter along the wharves of the bustling waterfront, and sink your toes into the sand of stunning beaches. You can be inspired at the legendary mansions, be energized by the vibrant nightlife, and savor local flavor at our many celebrated restaurants, wineries and breweries.

The motto of the resort town of Ogunquit, Maine, is "beautiful place by the sea," and with three and a half miles of sheltered white sand beaches, the residents are definitely not lying. Take a walk along the Marginal Way, a path that winds along rocky cliffs overlooking the ocean, or explore the town center on the local public transit - an old fashioned trolley. With art galleries, fresh seafood, and the summer stock Ogunquit Playhouse, the town of Ogunquit is a favorite vacation destination.

Yes, getting there is a bit of a project. But vacationers have been braving the ferry for years, and this tiny island off Cape Cod remains one of the most popular and picturesque destinations in New England. Among the island's towns, you're sure to find the Vineyard that's right for you. With stately Greek revival houses dating back to the whaling era of the early 19th century, Edgartown is a seaside village of boutique shopping and pristine harbor views. For more of a "beach town" feel, Oak Bluffs has the Flying Horses carousel, an arcade and an easy walk to the beach, plus the history and charm of the "gingerbread" houses in the Methodist campgrounds. Vineyard Haven offers visitors a blend of both. For a real retreat, Chilmark/Aquinnah is the place to get away from it all. In the off-season, the island is quieter and far less crowded, but the shore is always beautiful. Whenever you visit, leave your car behind! Cabs are plentiful and greet the incoming ferries to help you reach your destination. Most visitors prefer to explore the island on a bicycle, scooter or tourist-friendly public buses.

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.

Whether you’re a high roller or a low-key lounger, Las Vegas has something to suit your vacation taste. Sample fare from top chefs and cornucopian buffets, try your luck at one of the world’s premier casinos, or take in a spectacular show. Just wandering the Strip is enough to get your heart pumping. Once you’ve had enough of the razzle-dazzle, wave hello to the toothy sea life at the Mandalay Bay Shark Reef, hike Red Rock Canyon, or visit the Neon Museum, where old signs take on new life.

Hollywood beckons to tourists who long for a brush with Tinseltown glamor. Tour movie studios, slip your hands into the famous prints at the TCL Chinese Theatre, or indulge in a celeb sighting at one of LA’s white-hot nightspots. Spot your favorite star while shopping at The Grove, or forget all about the famous eye candy as you take in the iconic artwork at The Getty Center. For a different type of star-gazing, peek through the telescopes at the Griffith Observatory.

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.

Lingering over pain au chocolat in a sidewalk café, relaxing after a day of strolling along the Seine and marveling at icons like the Eiffel Tower and the Arc de Triomphe… the perfect Paris experience combines leisure and liveliness with enough time to savor both an exquisite meal and exhibits at the Louvre. Awaken your spirit at Notre Dame, bargain hunt at the Marché aux Puces de Montreuil or for goodies at the Marché Biologique Raspail, then cap it all off with a risqué show at the Moulin Rouge.

Barcelona feels a bit surreal – appropriate, since Salvador Dali spent time here and Spanish Catalan architect Antoni Gaudí designed several of the city’s buildings. Stepping into Gaudí’s Church of the Sacred Family is a bit like falling through the looking glass - a journey that you can continue with a visit to Park Güell. Sip sangria at a sidewalk café in Las Ramblas while watching flamboyant street performers, then create your own moveable feast by floating from tapas bar to tapas bar.

In Vienna, the coffee house isn’t just a hangout: it’s an institution. Lingering over a newspaper with a pastry and a strong espresso drink is, according to UNESCO, officially a Viennese cultural pastime. Walk off your slice of Sachertorte with a self-guided tour of the city’s stunning traditional, Secessionist, and modern architecture, such as the Imperial Palace, the State Opera House, the Kirche am Steinhof, or the Kunsthistorisches Museum, an exercise in ornate geometry.

Rome wasn't built in a day--and you'll need much more than a day to take in this timeless city. The city is a real-life collage of piazzas, open-air markets, and astonishing historic sites. Toss a coin into the Trevi Fountain, contemplate the Colosseum and the Pantheon, and sample a perfect espresso or gelato before spending an afternoon shopping at the Campo de’Fiori or Via Veneto. Enjoy some of the most memorable meals of your life here, too, from fresh pasta to succulent fried artichokes or a tender oxtail stew.