20,000 Leagues Under The Sea
20,000 Leagues Under the Sea, arguably one of the coolest of the original attractions, included 12 separately powered 38-person submarines exploring a 12 million gallon tank. Animatronic mermaids, enormous squid, and even a model of the Lost City of Atlantis were all part of the aquatic attraction.
The attraction was forced to close in 1994 due to extensive maintenance. According to rumors, a Finding Nemo sequel is in the works. A celebratory draining of the tank and sinking of one submarine in Castaway Cay marked the end of the attraction’s era.
Horizons
Horizons may be remembered by many who visited Walt Disney World in the early years. It was a building in the heart of EPCOT that allowed people to learn about scientific achievements. Horizons was created as a follow-up to the 1964 World’s Fair’s Carousel of Progress, which was an ode to “utopian futurism.”
Guests might opt to go to the desert settlement of Mesa Verde, the Bravo Centauri space station, or the undersea Sea Castle research base via an Omnirover riding system with two 70 milimeter “OMNIMAX” screens. After a six-year lifespan, the ride was decommissioned in 1989.