Though actively used for exploration since the early 1800s, this cave in Arkansas was left unchanged until 1983

Celestial Tea co-founder John Hay then purchased it along with a 240-acre spread for $146,000

He believed this cave could be an amazing hideout if things during the Cold War would heat up

He then spent four years and $2 million converting the cave into a fallout shelter

People’s article from 1988 stated, “First, 20 laborers removed 250 million years worth of silt from the subterranean chamber”

“The cave’s mouth was then covered with three-foot-thick concrete walls and faced with quarried stone”

“Openings were left for windows for the oak-paneled kitchen and living room and for an arched, walnut-framed entrance way”

“In the event of the Holocaust, all these openings can be sealed with concrete blocks”

“Inside, Hay followed the cave’s natural, high-roofed contours “The architect was God,” he said”. It even has a natural waterfall inside

After the Cold War ended, he realized a bomb shelter was no longer needed and sold it

Now the current owner of “World’s most luxurious cave” put it up for sale again

This time it can be yours for $2.75 million

Last updated in 2014, this 5,800-square-foot cave home has four bedrooms and four bathrooms

It has got all the modern amenities of a regular home, including a 75-inch LED TV in the living room

Comfy couches and thermal heating will keep you warm and cozy in the living area

The kitchen is state-of-the-art, and there is a large custom-built wooden bar for guests to come and gather around

All the rooms are rich in natural rock formations as most of the cave was preserved during all phases of building and remodeling

The spacious master includes a unique round queen-sized bed and a spa-like private bathroom, all surrounded by the natural formations of the cave

Surrounding rock walls and overhead rain showers offer a waterfall-like experience

Each of the 4 bedrooms is unique, offering queen-sized beds, exposed cavern walls, and lavish bathrooms

When you’re not gazing at exposed cavern walls and natural hanging stalactites you can grill up a steak while taking in the amazing view from the front deck

And last but not least, it even has it’s own helipad so you’d always have a place to park your chopper!