10. Expedition Everest, Florida
Estimated cost: $100 million
The Legend of the Forbidden Mountain is a roller coaster in Lake Buena Vista and you can find it in Guinness World Record book as the most expensive roller coaster ever built. But Expedition Everest is not only the roller coaster, there are a lot of other expensive parts of the theme park: 22 ft tall Yeti, authentic bamboo plants and other trees were planted, 5 000 tons of steel and 10 000 tons of concrete etc.
