As cheesy as it sounds, my dream holiday is Florida (going to WDW and IoA/US) so I am so fortunate that my 9th two week holiday to there is coming up next year... and I'm only 19!
Going to Australia for 4 weeks a few years ago. I saw family members who I had not seen in over 20 years, went skiing, climbed the Sydney Harbour Bridge, went on stage at the Sydney Opera house and sat on the beach at Phillip Island whilst the penguins came out of the ocean back to their nests at sunset among other things.