Where is your favorite vacation place?

Please tell me only about the places you have been. I want to find a great spot for a family vacation. Would like to know the top three reason’s why you liked it and if you would go back.
Any place but Florida. We use to live there and that is where the in-laws are. I do not have anything against them. Would like to try a new place. Something different then the beaches and theme parks. We like to be outdoors. I have a 7 and 3 year old if that helps. Thanks for all the answers so far. They have been great and will look into some of them.