I spent a month in Greece when I was in college. It was great! Spent a week on Crete. I was with a class, so during the day we checked out all the Minoan sites, but at night we went out on the town. Spent the next three weeks touring through Athens, Napflio, Olympia, Delphi, etc etc. Had a wonderful time! The place is beautiful! The highlight of the trip was either Napflio or Santorini, both wonderful places.