And I like Paris as the ultimate roaming city: just walk around and follow your nose (as we say in the Netherlands). It's a great city with great food and drink on every street. Don't forget the mega stores at La Defence! - Henk de Kruyff
Montmarte... cool atmosphere and great views. - Jon Price
I like the Latin Quarter (Left Bank) and the narrow winding streets.There are also some funky stores in the Marais. - Craig Mische