From ornate mansions to ocean views, this charming city - the largest in Maine - will enchant you. Saunter down the brick sidewalks and cobblestone streets of the revitalized Old Port District, where you can browse through bookstores, explore craft shops and eat to your heart's content. Visit the Portland Head Light, which dates back to 1791, and is the oldest lighthouse still in continuous use in the U.S. The great poet Henry Wadsworth Longfellow is the city's native son, and you can visit his childhood home, the Wadsworth-Longfellow House. With kids in hand, enjoy the highly interactive Children's Museum of Maine. And then go next door to the calmer Portland Museum of Art, a small, but eclectic museum with Impressionist works, Maine landscapes by Homer and Wyeth and other collections. Land or sea is an option here, so if you're tired of the street life, take one of the popular scenic cruises or whale watches, or hop on a ferry to the islands in Casco Bay. At the end of the day, and without kids in hand, unwind and rest your tired feet at one of the city's brewpubs.

If you’re a history buff and a die-hard foodie, Chicago’s your kind of town. Take an architectural-history walking tour, then dine at Alinea (the most celebrated molecular-gastronomy restaurant in the U.S.). And don’t miss the Museum of Science and Industry, the biggest science museum in the Western Hemisphere.

Home to the oldest university in Germany, Heidelberg was hit hard during 17th-century wars and rebuilt in the 18th century with baroque buildings. For a pleasant walk, stroll through the historic city centre's Gothic streets. Be sure to take in Heidelberg Castle, the symbolic heart of the city; Alte Brucke, a beautiful 18th-century bridge; and the Student Jail. Built as long ago as the 16th century, it was used to keep mischievous students off the streets for three days to a month at a time. And they say Penn State is the number-one party school!

With seemingly endless sunny beaches, charming towns, glamorous yachts and celebrities galore, the French Riviera keeps the Belle Époque alive. Most towns are best explored on foot, while a cheap and reliable rail network connects the cities and towns. Fabled destinations such as St-Tropez, Nice, Cannes, Antibes, Villefranche-sur-Mer and St-Jean-Cap-Ferrat lure visitors to follow in the wake of Picasso, Matisse and Bizet. Over a hundred museums and more than 150 galleries keep the artistic ambiance alive.