My personal ranking of interesting places for photography in the cities or it surrounding. Feel free to comment. My personal most disappointing city is Milan - although I have seen Leornado da Vinci's Last Supper and bought a Prado bag for wifey there

1. Tuscany (Florence, Sienna, San Gimignano, Lucca, etc.)
2. Paris and Southern France
3. Prague
4. Rome
5. Madrid & Bacelona
6. London
7. Vienna
8. Amsterdam
9. Brussels
10. Istanbul & Turkey (although it is not yet European and may be a while!)

Waiting to be ranked (as I have not been there or not there long enough):
1. Germany (Berlin, Munich etc. - going end of this month )
2. Venice
3. St Peterberg & Moscow
4. Scandinavian cities
5. Portugal/Lisbon
6. Greece
7. Other Eastern Europe countries