Not an Escape Room. Your Own Private Theme-Park-Scale Adventure in Sydney.
There's no ticking clock on the wall. No row of padlocks. No small room with a few props.
Heart of the Mountain is one of the most unique experiences in Sydney: a 360-degree, theme-park-level adventure that combines immersive theatre, sound design and set design, all designed and built in Australia and hidden inside a warehouse in Marrickville.
You don't watch the story. You walk into it.
A Mystery Hidden Since 1957
In 1957, conservationist Alice Ivy led an expedition deep into the mountain, searching for an energy source powerful enough to change the world. She never came back. Her last message: "We've found something."
Your Expedition Begins
Decades later, her granddaughter Hazel has reopened the search, and she needs your team.
You'll receive your National Park Pass, meet a live Park Ranger, and set off on an expedition through jungle, caverns and the deep places where Alice was last seen.
Every session is fully private, so your group are the heroes of your own adventure movie.
Theme-Park-Scale Immersion, Not an Escape Room
360-degree immersion: every wall, floor and ceiling is part of the world. Theme-park-level effects: mechatronics, dynamic lighting, smoke, atmospheric soundscapes and practical effects that react to what your team does.
An adventure journey: you travel through a series of connected environments, each one revealing more of the story.
Built in Australia: every set, prop and effect was designed and made here by an Australian team of industry professionals.
What Guests Are Saying
"From top to bottom it genuinely felt like we were inside a mountain." (Hanhan, Google review, May 2026)
Rated 5.0 on Google
"The theming and props are high quality, and truly feels like you've stepped into a theme park ride." (hedgehog, Morty) "It's less escape room and more you're actually an explorer, discovering the secrets of the mountain." (Google review)
Heart of the Mountain is rated 5.0 from more than 450 Google reviews, and was a 2025 TERPECA nominee, the escape room industry's top enthusiast award, in its very first year.
Is It for You?
If you're looking for things to do in Sydney that go beyond the usual bucket list, this is it. It works for date nights, birthdays, team outings, families with older kids, and visitors who want an experience they can't get anywhere else.
"If the Mountain chooses to reveal itself to you, there's no going back."
The mountain is calling. Secure your National Park Pass, gather your fellow adventurers, and step into your own private, theme-park-scale adventure.
Book Now and step into Australia’s most mysterious adventure experience.
Join the expedition. Your mystery is waiting.
