Top 10 Cities in Europe

1. Paris

• Eiffel Tower
• The Louvre
• Sacre Coeur
• Notre Dame
• Musée d´Orsay
• Arc de Triomphe and Champs-Elysées
• Centre Pompidou
• Seine River

2. London

• Houses of Parliament
• Buckingham Palace
• Tate Modern
• Trafalgar Square
• Tower of London
• Tower Bridge
• London Eye

3. Rome

• The Colosseum
• The Pantheon
• Palatine Hill
• St. Peter´s Basilica (Vatican)
• Trevi Fountain
• Piazza di Spagna
• Sistine Chapel

4. Berlin

Also mentioned in the post with the top 10 cities in Germany :)

5. Amsterdam

• Canal ring
• Magere Brug
• Museums: Rijksmuseum, Van Gogh Museum
• Begijnhof
• Oude Kerk and Red Light District
• Anne Frank House

6. Barcelona

• La Sagrada Familia
• Las Ramblas
• Gothic Quarter
• La Ribera: Picasso Museum
• Tibidabo

7. St. Petersburg

• Church of Our Savior on the Spilt Blood
• The Hermitage Museum
• Peter and Paul Fortress
• The Catherine Palace
• Kizhi Island

8. Vienna

• Belvedere Palace
• Hundertwasserhaus
• Schönbrunn Palace
• Prater
• St. Stephen´s Cathedral
• Albertina Museum and Gallery
• Imperial Court Theater

9. Athens

• Acropolis
• Temple of Olympian Zeus
• Theater of Dionysos
• Tower of the Winds
• Hadrian´s Arch
• Kanellopoulos Museum

10. Istanbul

• Blue Mosque
• Topkapi Palace
• Grand Bazaar
• Bosphorus Night Cruise
• Kiz Kulesi