Grand Canyon Caverns Hotel - Deepest, Darkest, Oldest Room In The WorldGrand Canyon  
Caverns Suite

Known as the “largest, deepest, darkest, oldest, quietest motel room in the world,” the Grand Canyon Caverns Suite in Arizona ensures an experience unlike any other.

With caverns and walls over 65 million years old and located 220 feet underground, guests will find themselves completely isolated in the largest dry cavern in the United States.

This suite is not for everyone; it is the only one available in these caverns. For those who’d rather stay above ground, the motel offers plenty of other rooms.

Adventure seekers will find a plethora of activities, from cavern tours and ghost walks to horseback riding and rafting day trips.

Guests will find a restaurant with a full bar and screened patio a mile up the road.

Type: Cave

And how about a cavern grotto dining with all-you-can-eat dessert?

Grand Canyon Caverns Grotto

Grand Canyon Caverns & Inn organizes bike and car shows in their parking lot.

Grand Canyon Caverns

They also have a retro-styled gas station where you can see what Route 66 looked like in its heyday.


If you think arriving by car is for the poor, then you'll be happy to know they have an airport, too, with a 5,100 feet (1.5 km) long runway.

Grand Canyon Caverns Gas station

The Grand Canyon Caverns is located along Route 66 in Northern Arizona, and it was originally designated as a fallout shelter in 1961.


Styled as a typical roadside diner, the Caverns Grill offers classic American favorites like cheeseburgers, chicken strips, pulled pork, and crispy fries.

Grand Canyon Caverns diner

Betty Boop, vintage car pictures, and license plates make up the diner's decorations.

Grand Canyon Caverns Betty Boop

A giant Tyrannosaurus Rex protects the entrance to the caverns—well, it's actually only its skull, but it's still pretty scary.

Grand Canyon Caverns entrance with dinosaur

Before you head deep into the caves, here are a couple of stats: The Grand Canyon Caverns' walls are 65 million years old, and you can go 220 feet (73 meters) below ground.

Grand Canyon Caverns Cave Room sign with information

The cave room is 155 feet by 400 feet (52 by 133 meters) with a ceiling 75 feet (25 meters) above you.

Grand Canyon Caverns Caves

During your adventure deep underground, you will encounter various cave chambers: Chapel of the Ages, Snowball Palace, Devil's Den, Halls of Gold, and Mammoth Dome.

Grand Canyon Caves

The underground suite is completely furnished with two double beds, a living room, and a library of old books (including a National Geographic collection dating back to 1917).

Grand Canyon Caverns Cave Room stairs

The underground hotel room also has a working record player complete with records to choose from.

Grand Canyon Caverns Cave Room

One night costs a whopping $1,000 per night for two guests.


According to the motel’s website, guests should keep in mind that the caverns hold guided tours 363 days a year along the concrete trails that curve around all sides of the suite, so privacy is limited during tour hours.

Grand Canyon Caverns Cave Room with TV

This is the world's deepest, darkest, and quietest room.

World's deepest, darkest, quietest hotel room

The recently refreshed interior respects the original setup, but the furniture has been upgraded, and the TV has gotten bigger.


If you are scared to spend the night but are still interested in seeing the world's deepest room, you can book a tour by clicking HERE.

Cave Room

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115 Mile Marker AZ-66, Peach Springs, AZ 86434, United States