Not sure how to answer, but today my criteria is... where have I been to numerous times, yet must
return to again.
Florence, a city that lacks for nothing, yet is still small and walkable. So many great weekend trips nearby.
Paris at night is sheer magical to me, and has everything I love so much in life. The direct train to Champagne does not hurt my feelings at all.
Old City of Jerusalem. I am simply mesmerized as I explore the four quarters.
London, a place I would love to spend 2-3 years.
NYC, a place D and I want to rent a place for a year.
Vienna, such an intelligent city with great culture.
My motor tends to race very high, but Brittany, Normandy, Amalfi Coast, Lake Como, Bruges and Tiberias all seem to reduce my motors idle a great deal.
Looks like Spain or Turkey is up next ( subject to change) and a weekend with my twin DoktaP in Tuscany for his birthday next year.