In this special countdown, we'll conquer the 12 headlining Disney Parks attractions built around "mountains" to see which peaks truly come out on top.

LOST LEGENDS: The Adventurers Club: In the history of Disney Parks, there's simply nothing else quite like the Adventurers Club. With the menu of a bar, the experience of a walkthrough, the story of a dark ride, and the cult following of a film, this unique attraction blended the height of Disney's storytelling and design with the excitement of a secret society. A haven of songs, stories, and special effects, this Lost Legend shaped Disney Parks... then disappeared.

MODERN MARVELS: TRON Lightcycle Power Run: Tomorrowland has weathered its fair share of pop culture changes – from ambitious scientific optimism, to the grimy, gritty sci-fi darkness. But a new kind of "tomorrow" – and a new kind of E-Ticket – are setting a new course for Disney Parks the world over. This headlining roller coaster was one of the most exciting attractions to debut at Shanghai Disneyland... but it's on the way to a Disney Park near you very soon. Here's what to expect.

MODERN MARVELS: Frozen Ever After: It all begins with "happily ever after..." And for fifty years, Disney's animators, designers, and Imagineers tried to bring The Snow Queen to life. In this in-depth feature, we'll trace the development of Frozen see how one of the highest grossing films of all time inspired one of the most controversial Disney attractions ever.

MODERN MARVELS: Walt Disney's Carousel of Progress: Among all the wonders at Disneyland during Walt's lifetime, his friends and family say he singled out one attraction as his favorite, proclaiming that it should never cease operation. And fifty years later, it hasn’t… not for long, at least. But for all its longevity, this “revolutionary” attraction has never stayed put for too long… From coast to coast and back again, this is the full story of Carousel of Progress.

People like to be scared.

MODERN MARVELS: Expedition Everest: Deep in the snow-covered Himalayas, a creature is said to defend the sacred mountain... The term "Modern Marvel" takes on new life when applied to Expedition Everest, a truly superlative attraction that's paramount even in Disney's legendary mountain lineup. From legends of the Yeti to its (infamous) Animatronic form, today, we'll set course for the unknown as we chart the true stories of the most legendary mountain on Earth and its Animal Kingdom E-Ticket.

DISASTER FILES: Backstage Studio Tour: What happens when you base an entire theme park around the wrong concept? When the Disney-MGM Studios opened in 1989, executives were certain that it would lead to Orlando becoming a "Hollywood East," kicking off a new era of filmmaking... certain enough to build their entire park around an unbelievable two-hour anchor attraction to whisk guests behind-the-scenes. If only there had been anything worthwhile filming there...

Increasingly, Universal’s formula is feeling a little stale... And we've got some suggestions. We’re determined to offer up four kinds of rides that we think are absolutely essential to Universal’s growth… ride genres Disney has, in many cases, mastered; attractions that elevate the experience to a new level. In so many places, Universal is so close. But growth comes from stepping into the unknown…

MODERN MARVELS: Phantom Manor: Tucked away on a forested hillside in the old mining town of Thunder Mesa, a light flickers. Rumor has it that poor Melanie Ravenswood was left at the altar, and that she still waits for the return of her lost love... even in death. Forget everything you know about "grim, grinning ghosts," happy haunts, and a Ghost Host. Disneyland Paris' one-of-a-kind Phantom Manor will leave you speechless.