Originally Posted by
lsquare
I'll be flying first to Amsterdam. From there it'll be Rotterdam, Brussels, Ghent, Bruges, Cologne, Bonn, Zurich, Vaduz, Venice, Florence, and Rome.
I would omit some of those, including Bonn (why is that one you list - family for instance?), and possibly Rotterdam, and replace them with alternatives. Vaduz is an interesting one as it isn't commonly on the list of 'must sees'.
I agree with Aviatrix that a month is doable because you don't seem to be running around checking countries off a list (although if you have Vaduz and San Marino on the list, perhaps that
is the intent). I am actually not that big a fan of Zürich and would perhaps add some other sites in Switzerland (or even Strasbourg) to your list, if you are omitting some of the locations.