The largest underground hotel suite in the world is located 21 stories below the surface in Arizona's Grand Canyon Caverns. The Cavern Suite sits in a 345-million-year-old cave and costs $1,000 per night.
Sleep 21 Stories Underground in a 345-Million-Year-Old Cave
Imagine sleeping in complete silence, 200 feet below the Earth's surface, in a cave that formed before dinosaurs existed. That's exactly what you get at the Grand Canyon Caverns Suite in Peach Springs, Arizona—the largest underground hotel room on the planet.
A Prehistoric Bedroom
The cavern itself is 345 million years old, formed during the Mississippian epoch when this part of Arizona was covered by a shallow sea. The suite occupies a massive underground chamber that's naturally climate-controlled at a constant 56°F year-round.
What do you get for $1,000 per night?
- Two full-sized beds and a queen-sized bed
- A living area with books, games, and a record player
- Complete darkness and absolute silence
- Prehistoric fossils embedded in the walls around you
- Zero cell phone reception (a feature, not a bug)
The Deepest Sleep You'll Ever Get
The suite sits 21 stories below ground level, accessible only by elevator. Once you descend, you're utterly cut off from the outside world. No traffic noise. No neighbors. No light pollution. Just you, millions of years of geological history, and the faint hum of your own thoughts.
The silence is so complete that many guests report it takes adjustment. Some find it deeply peaceful; others find it unsettling. There's something profound about sleeping in a space that predates complex life on Earth.
How It Came to Be
The Grand Canyon Caverns were discovered in 1927 when a woodcutter nearly fell into a mysterious hole in the ground. For decades, they operated as a tourist attraction, offering guided tours of the underground chambers and their ancient formations.
In 2010, the owners decided to take things further. They transformed one of the largest chambers into a fully furnished suite, complete with electricity, plumbing, and amenities you'd expect from a boutique hotel—just, you know, underground.
Not Just a Gimmick
Beyond the novelty, there's real value in the experience. The cave maintains naturally perfect humidity levels and air quality. Some guests with respiratory issues report sleeping better underground than they ever have on the surface.
The isolation factor appeals to writers, artists, and anyone seeking a genuine retreat from modern connectivity. You literally cannot be reached. There's something liberating about that.
Your $1,000 also includes a private tour of the caverns, breakfast delivered by elevator in the morning, and bragging rights that you slept deeper underground than almost anyone you'll ever meet.
Worth the Price?
For most people, one night is enough—the experience is unforgettable but intense. The complete darkness and silence can be disorienting. But for those seeking something truly unique, sleeping in a prehistoric cave 21 stories below Arizona offers an experience no ordinary hotel can match.
Just remember to bring a good book. Your phone won't be any help down there.