In reply to pandaling:
Depends on what sort of climbing you're after, heres a couple of my dream trips;
Patagonia - Would be great just to even visit this sort of place and do some easy alpine style routes/peaks
A tour of America - Would be great for a longer trip, work you way down from Canada (Squamish) down to U.S.A (Spoilt for choice! Red Rocks, Indian Creek, Yosemite...) then finish in Mexico (El Potrero looks amazing for multi pitch sport).
Australia - Think for me this is tied with America, 3 months in Arapiles and 3 months in the Grampians
Yangshuo in China - Always been a bit of a dream of mine, sport climbing in an unusual place.
India - Go bouldering on Hampi (depends on time of year I guess though) then once you're bored go sport climbing in Badami. You could even combine India with somewhere else like Thailand.
South Africa - Rocklands for bouldering and Boven for sport
Morocco - Adventurous trad climbing
A tour of the European alps or Spanish sport climbing would be good as well, although it seems reasonable you could do that sort of thing as a shorter trip. May as well make the most of a 6 month trip and go a bit further afield. Whatever you do you probably won't regret it
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