I would like to re-visit Bar Harbor and Acadia National Park.  Camping/backpacking in The Black Hills, and anywhere in Alaska and Australia.  The Fuente plantations and factories.  Any Cuban plantations and factories.  Any Mayan ruins.  Ireland - country and village tour.  Mount Kilimanjaro and the Serengeti.  
Dave's garage for a smoke filled herf.
And last but not least I'd like to spend a week in each of the bedrooms of Jennifer Aniston, Megan Fox, Rachel Bilson, Mila Kunis and Olga Kurylenko.
 
Ron