I may lose all karmic credit and be docked 300 likes for agreeing with a man with "goduke" in his title (unless he's talking about Raoul), but I'm glad somebody finally stepped up and mentioned Turkey. Yes, I've been to the aforementioned places in Switzerland, many places in Italy, the coast of Ireland, Hawaii, etc.--but the incredible history, texture, and visual beauty of Turkey--varying widely from the Aegean Sea Coast to Cappadocia to the breathtaking Istanbul--belongs on anybody's bucket list. And God help me, but Randy's also right about the hot air balloon trip in Cappadocia. Photos are available through a simple Google search, but seeing it in person was absolutely unforgettable.
Great ideas from the rest of this thread. Thanks, all.