could you give me some ideas as to how long i should stay for in each of these citys/countrys .. long enough to see and enjoy the city … ive been to venice, and vienna and paris before so i know kinda what to expect over there and how long id like to revisit those places for … these are the others,
-london
-spain
-french riviera
-pisa
-milan
-rome
-pompeii
-isle of capri
-sorrento
-athens
-delphi
-olympia
-santorini
-mykonos
-croatia
-slovenia
-berlin
-amsterdam

or if there are some other places you found really amazing ?