I was a Disney Imagineer for 8 years. Here are 9 little-known facts about the parks.

You can find many fun facts and interesting information about the Disney parks' rides and designs. Charles Sykes/AP
For eight years, I was a Disney Imagineer. My job involved designing, building, and creating the parks.

Dumbo is available at all 6 Disney Parks, and Disneyland's opening-day rides are still in operation.

Under Magic Kingdom and Epcot, there are utilidors that can transport people, food and trash.

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Dumbo the Flying Elephant is available at all six Disney properties. However, one version has a unique mechanism.

It is possible to ride it anywhere in the world. Marjie Lambert/Miami Herald/Tribune News Service via Getty Images

Dumbo the Flying Elephant is the only ride available at all six Disney properties.

The ride at Magic Kingdom, Florida has the only "dueling Dumbos", which are two carousels that run side-by.

Although rumors are true, there are not underground tunnels under Magic Kingdom or Epcot.

View of Main Street USA from Cinderella Castle at Disney World. Charles Sykes/AP

Under Magic Kingdom and Epcot, there are "utilidors", which consist of complete roadway and walkway infrastructures.

They aren't tunnels technically because they're not underground. They are located on the ground floor, while the actual park is on its second floor.

Utilidors serve multiple purposes. They can be used to covertly move around characters, employees, food, waste, and merchandise. They can also be used for emergency purposes.

If you sign up for Disney Keys to the Kingdom, you can get a behind the scenes look at the utilidor systems. The five-hour tour is available for $99 when it's available. However, it's well worth the cost if you enjoy learning about Disney secrets.

Disney World Florida's property isn't limited to theme parks and hotels.

Beyond the theme parks, there are still protected wetlands. John Raoux/AP

Walt Disney World, Florida is home to thousands upon thousands of acres of wetlands that extend beyond the parks.

The area is protected by a wildlife-management-conservation easement.

Walt Disney originally imagined Epcot as a utopian city that could function fully.

Epcot could have been much more than a theme park. David Roark/Disney Parks

Epcot (or Experimental Prototype Community of Tomorrow) wasn't intended to be a mere theme park. Walt Disney wanted to create a community that combined urban-planning techniques and represented a way of life.

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It was a futuristic vision of living, commerce and transportation. Walt imagined it all being housed in an air-conditioned dome to make it more futuristic.

Walt died a few months after the start of the process and Epcot's plans changed.

China is home to the tallest Disney castle on the planet.

Shanghai Disneyland is the home of Enchanted Storybook Castle. Hu Chengwei/Getty Images

Shanghai's Enchanted Storybook Castle is the tallest of all the six Disney castles in the world. It stands at 197 feet.

The original Sleeping Beauty Castle in Disneyland, California is the shortest at 77 feet.

Disneyland was not originally intended to be in Anaheim, California.

Los Angeles was only a few miles away from the park. Gabriella Sorrento

Walt proposed that Disneyland be built in Burbank, California in the 1950s. This is about 36 miles from Anaheim.

Walt began to see Disneyland as a reality. He wanted more land. This was the reason for the move.

The resort opened in 1955. In 2001, the resort was expanded to include Disney California Adventure Park.

When designing Hong Kong Disneyland, Imagineers sought out feng-shui specialists.

The view from behind Hong Kong Disneyland's castle. AP Photo/Kin Cheung

Imagineers sought out feng-shui experts and masters while designing Hong Kong Disneyland. This ancient Chinese practice is about creating spaces that are in harmony with the natural world.

The Imagineers wanted harmony to be a part of their designs. So, when you walk through the park, remember that each building and walkway was designed with a greater purpose.

All of Disneyland's original opening-day attractions are still in operation 66 years later.

Jungle Cruise was revamped over time, but it's still there. Allen J. Schaben/Getty Images

Guests can go back in time and hop on the attractions that were first introduced at Disneyland in 1955.

Jungle Cruise, Storybook Land Canal Boats and Mark Twain Riverboat are some of the original rides still in operation today.

To ride most attractions tourists used to need to buy "E" tickets. This term is still being used today.

Star Wars: Galaxy’s Edge's new attractions are E-ticket attractions. Kim Renfro/INSIDER

From 1955 to 1982, Disneyland guests and later Disney World visitors had to buy separate tickets for each attraction. Based on their popularity, the rides were divided into five tiers: A, B C, D and E in the late 1950s.

The most popular attractions were "E"-ticket rides. Disney did away with the system but the term still refers to the top-tier attractions in the parks.

Rides like Star Wars: Rise of the Resistance or Mickey and Minnie’s Runaway Railroad are today considered "E-ticket attractions".

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