Here was my route:
Rome, Florence, Pisa, CT, Venice, Vienna, Prague, Munich, Berteschgarden, Salzburg, Lauterbrunnen Valley area, Barcelona, Paris, Amsterdam, London.
Had a blast, went with nothing booked except my first night and a euro rail pass. Took four over night trains and one flight in Europe. Booked my rooms and trains the night before a new city every time and got a room and a train every time but once. Couldn't get a 3rd night in Munich due to a convention.
Carry a money belt in Italy!! Heard from several other travelers they were pick pocketed. Felt hands in my pockets several times.