Epcot was my favorite out of all the parks! The young ones would have fun here but its even more fun if you're a teen and up. Stepping into Epcot is like stepping into the future with its advance technologies and space missions where are actually feel like an astronaut!
Also Epcot features this whole part of the park dedicated to the World Showcase. Walking through the world showcase is like walking through several different countries like China, France, Japan, Mexico, Italy and so fourth. If you walk through "France" for example, you will be surrounded with French architecture, French Shops, French restaurants etc.. It's really neat! I think that you would have to spend all day at Epcot just to explore the World Showcase and get a taste of what its like to travel the world!