USA (including quite a few drives from Mich. to Calif.--B-i-i-gggg country! And hitch-hiking home to Calif. from Alaska in my younger, dumber days)
Mexico
Canada
Costa Rica
England
Scotland
Wales
France
Italy
Netherlands
Greece
I really didn't get much travelling in before I had kids, and my travel ambitions have been quelled at the moment. But, someday, GeetaK, definitely India!