Disney World gets rid of rides and attractions very often, usually to replace them with new ones. Here is a list of rides and attractions that I have been to that are no longer in Disney World.
Mickey’s and Minnie’s House were attractions in the Magic Kingdom when I was a toddler. You could basically walk inside and look around Mickey’s house and you could do the same with Minnie’s. It was removed to make room for the new Fantasyland.
Maelstorm was a ride in the Norway pavilion. It was a boat ride with creepy trolls. Frozen Ever After is now where Maelstorm used to be.
Snow White’s Scary Adventure is a ride I never went on because I was little and heard the ride was very scary. Fantasyland is now where Snow White’s Scary Adventure was.
Ellen’s Energy Ride was a very slow ride in Epcot that made my dad fall asleep. You traveled back in time with Ellen and visited dinosaurs. A Guardian’s of the Galaxy ride is under construction where Ellen’s Energy Ride was.