Disneyland in Anaheim, California, is full of surprise details if you know where to look. Many Easter Eggs—like hidden Mickeys and Morse code messages from Walt—are common knowledge among fans, but one secret spot beneath Matterhorn Mountain is off-limits to guests. As Travel + Leisure reports, a new docuseries called The Imagineering Story, streaming on Disney+, offers the public a rare look at the basketball court tucked inside the park's iconic coaster.

Open since 1959, the Matterhorn Bobsleds takes guests on a thrilling adventure through a snowy peak modeled after the landmark in the Alps. From the outside, the roller coaster could be mistaken for a real mountain, but the "backstage area" beneath the facade looks a lot less magical. With space to spare, Disney employees set up a half-court with one basketball hoop in the structure's pinnacle.

In the first episode of The Imagineering Story, Disney Imagineer (one of the attraction designers) Bob Gurr gives viewers a tour of the mountain's interior—including its famous basketball court. According to Gurr, the court has long been a place for Disneyland Cast Members working on the ride to unwind on their breaks. Some parts of the rumor have been fabricated—the space isn't a regulation-size court, and it wasn't installed to cheat building ordinances—but the Disneyland legend is based in truth.

The Imagineering Story offers behind-the-scenes looks at the making of Disney's iconic properties. In each episode, the Disney+ original series features footage from the parks' history and insightful interviews with Imagineers.

Disneyland isn't the only American institution with a secret basketball court. There's one on the fifth floor of United States Supreme Court Building, and it's naturally called "The Highest Court in the Land."

[h/t Travel + Leisure]