ALL OF THEM!
More seriously, how much time do you have? How much do you prefer to spend on each place?
I'd do something along the lines of London - Paris - Berlin - Warsaw - Prague - Venice - Florence - Rome - Barcelona - Madrid, adding/removing cities as needed. But you'd need a rail pass for that. Other options could be limiting yourself to 3 or 4 cities, and checking some low-cost airlines for the itinerary (you'll have to purchase luggage separately for these so, if possible, staying somewhere at a friend's and leaving with just a backpack is better for this).
More seriously, how much time do you have? How much do you prefer to spend on each place?
I'd do something along the lines of London - Paris - Berlin - Warsaw - Prague - Venice - Florence - Rome - Barcelona - Madrid, adding/removing cities as needed. But you'd need a rail pass for that. Other options could be limiting yourself to 3 or 4 cities, and checking some low-cost airlines for the itinerary (you'll have to purchase luggage separately for these so, if possible, staying somewhere at a friend's and leaving with just a backpack is better for this).
Comment