This city was made for walking. Stroll grand boulevards with sweeping views of the city, pristine parks with trees planted in perfect rows, and narrow streets crowded with vendors selling flowers, pastries and cheese. Then head to the Île de la Cité, a small island in the Seine, to see Notre Dame Cathedral.

The world's largest art museum, the Louvre is housed in a Medieval fortress-turned-castle so grand it's worth a tour itself. You walk through the 71-foot glass pyramid designed by I.M. Pei and added in 1989, and step into another world--one with carved ceilings, deep-set windows, and so many architectural details you could spend a week just admiring the rooms. The Mona Lisa is here, as well as the Venus de Milo and Winged Victory (the headless statue, circa 200 BC, discovered at Samothrace). The Louvre has seven different departments of paintings, prints, drawings, sculptures and antiquities. Don't miss the Egyptian collection, complete with creepy sarcophagi, or the collection of Greek ceramics, one of the largest in the world. (Please note the Louvre is closed on Tuesdays.)

What's that huge white arch at the end of the Champs-Élysées? The Arc de Triomphe, commissioned by Napoleon in 1806 after his victory at Austerlitz. Your licensed local guide will elaborate on this, and other Parisian landmarks. See some of the most famous sites, including the ornate, 19th-century Opera, the Presidential residence, the ultra-chic shops of the Rue du Faubourg St-Honoré, and the gardens of the Tuileries. You'll pass the Place de la Concorde, where in the center you’ll find the Obelisk of Luxor, a gift from Egypt in 1836, and the Place Vendôme, a huge square surrounded by 17th-century buildings. Spot chic locals (and tons of tourists) strolling the Champs-Élysées. Look up at the iron girders of the Eiffel Tower, built for the 1889 World's Fair to commemorate the centenary of the French Revolution. See Les Invalides (a refuge for war wounded), the École Militaire (Napoleon's alma mater), and the Conciergerie (the prison where Marie Antoinette was kept during the French Revolution).

See the city from the water on an hour-long cruise along the River Seine. The Seine cuts right through Paris, dividing the city in half. See the Eiffel tower rising up on the Left Bank, the walls of the Louvre on the Right Bank. A guide will point out other monuments and architectural marvels as you pass, many of which are illuminated by clear white light at night.

Tonight for dinner, enjoy a speciality from the Brittany region of France: crepes. Creperie restaurants are very popular in Paris and you will be able to choose from the variety of toppings (ham, cheese, egg, peppers, spinach, cream--or a combination!) to create your favorite savory crepe (called "galette") before you enjoy a local favourite: a sweet crepe served with chocolate, fruit or jam.

A local guide will lead your adventure in Milan, Italy's capital of fashion and finance. See the renowned La Scala opera house, with Europe's largest stage. The city's marble Duomo took almost 450 years to complete, and is the world's largest Gothic cathedral. On clear days, its 135 spires can be seen from the Alps.

The ultimate symbol of Ancient Rome, the Colosseum still dominates the modern city. Tour the amphitheater with your local licensed guide. Built by the emperor Vespasian in A.D. 72, the structure held almost 50,000 spectators but was so well organized that the entire place could be emptied within 15 minutes. Inside, the spectacles varied from gladiator battles to immense naval contests to wild beast shows, in which thousands of exotic animals like giraffes and ostriches were popped into the stadium through trap doors and left to fight Roman hunters. See the system beneath the floor that operated the trap doors and housed the animals, then continue on to the relative calm of the Forum. Ancient Rome’s commercial, religious and political center, the Forum held markets, temples and the Senate House. Near the Rostra, or speaker’s platform, you can still see game boards scratched into the marble by bored politicians--anyone up for a game of tic tac toe?

Tour St. Peter’s Basilica with a licensed local guide and whisper headset so you don't miss a word. Outside the church, four rows of columns radiate out like welcoming arms; inside, the church seems enormous enough to embrace the entire world. The dome, partially designed by Michelangelo, rises 452 feet above the ground. Michelangelo’s mark is everywhere here, from the costumes worn by the Swiss Guards to his exquisite “Pietà” sculpture (the only sculpture he ever signed) to the amazing frescoes of the Sistine Chapel. Because he considered himself a sculptor and not a painter, Michelangelo hated working on these paintings, now considered masterpieces.