Greece! I have always loved ancient history. The idea of touching something someone made thousands of years ago is so exciting to me. And the islands are so beautiful. I would love to take a summer and travel all over the country. Take a boat to all the islands and dance on the beach....
the greek islands are amazing - I did a quick island hop to santorini, paros and naxos last year and it was really great. Heard of Hydra but time limitations meant i could only do 3 islands and athens.
for me a perfect holiday would be a trip seeing Oz and NZ. I'd be happy to hostel it and just do the whole tour thing over say 2 months.. Frazer Island, ayres rock, etc etc etc. And a little week in bali in the middle would be nice just to relax as well!