I travel a lot and I have to say Europe is amazing. I would love to get back to Italy sometime, especially Rome, because there's so much there to see and experience!
I would go back to Holland, the last time it was a snap decision to go while staying in Belgium on vacation with my parents. We only spent four days there, and two were really spent travelling. I would like to stay a bit longer in Amsterdam with my GF with me this time, as she has also been and liked it a lot.
thanks for answering!
or
Holland:
Probably France because of its' rich history and culture.