Lisbon, said to have been founded by Ulysses as Olisipo, is one of Europe's most fascinating cities. A devastating 1755 earthquake destroyed much of it, and the Baixa was rebuilt in neo-classical style, now the city's heart. Overlooking the Tagus, the "City of Explorers" offers districts like Alfama, with Moorish lanes, and Bairro Alto, where you can hear Fado. Nearby are the palaces of Queluz and Sintra.

Cádiz, Andalusia's famed capital, has been beautifully restored. Palm trees, elegant squares, flower-filled parks, red-tile rooftops, and lively markets give the port a charming feel. Its old town sits on the peninsula tip, full of lively plazas, while the new town is an elegant modern city with excellent beaches. Cádiz is also a good base for a day trip to Seville, home to the Alcazar, Seville Cathedral, and the Giralda Tower.

Explore the Mendoubia Gardens which contain a fascinating banyan tree that is more than 800 years old. The Caves of Hercules are 9 miles west of Tangier in the Cap Spartel area; it is a place of great beauty and archeological significance.

One of Europe's most visually stunning cities, Barcelona balances the medieval intimacy of its Gothic Quarter with the grace and distinction of the wide boulevards in the Moderniste Eixample. It was the home of architect Antoni Gaudí, whose Sagrada Familia Cathedral, Park Güell and Casa Milà are the most profound statements of Modernisme. View the splendid works at the Picasso Museum and the Miro Foundation, or discover Barcelona's passionate ambiance at a flamenco show.

Visitors love Mahón's charming shops, eateries, and hilly old quarter with Georgian buildings. Explore the island for dramatic views, quaint villages, and well-preserved taulas from its megalithic past. Don't miss Plaza de España, where market stalls line the arcades of the former Carmelite friary, selling local artwork and souvenirs. Enjoy fresh seafood, paella, local wines, and Mahón's signature cheese at cozy tapas bars.

Located in southeastern France, today's Marseille is a far cry from the sleepy villages it once inspired in Cézanne's paintings. With more than a million people, the city remains the cosmopolitan and exuberant capital of southern Europe, with its picturesque Old Quarter, lively sidewalk cafes and shops, and Romanesque-Byzantine Notre Dame de la Garde Basilica, overlooking the steep cliffs and offering a bird's eye view of the city's colorful "quartiers" stretching down toward the sea.

Tiny but packed with fun, Monte Carlo blends history, beauty, entertainment, and leisure. Monaco's wealthiest district, it's known as the international capital of luxury, with celebrity sightings, casinos, and nightlife. Yet its old-world charm remains in art and architecture: palaces, cathedrals, and museums in a historic old town. Don't miss the daily changing of the guard and the public areas of the Palais du Prince, home to the royal family and once to Grace Kelly.