HHHMMMM...I'm gonna have to think about this one for about 1.2 seconds....Epcot. We have been going to Epcot since the early 80's not long after it first opened in 82. It was called Epcot Center then and it just blew me away. All the inovation and look toward the future was incredible, and we also loved strolling through the different countries. Now, we always go to Epcot for at least two days every trip. So much to see and do. We have actually been on a week long trip before and not even make it to MK, but Epcot is a must. Don't get me wrong, we love the MK, and if we had children, it would be #1, but for us it is #3 on our trips (SeaWorld is #2).
Epcot in the 80's was an experience that can't be duplicated today. World of Motion, Horizons, Journey into Imagination, Communicore East and West, The Image Works... Heck, we even saw Captain EO once (which was enough), and enjoyed it. We would ride the double-decker buses around World Showcase and just enjoy the scenery. People actually stood and cheered at the end of The American Adventure Show. Things change, and although Epcot remains our personal favorite, early to mid 80's Epcot won't ever be topped (in my opinion).
Did not mean to get all nostalgic here...I could have answered you post with one word....Epcot.
Ricky