PHOTOS: Underground mansion in Las Vegas asks $18M

“There’s been lot of interest in the sense that people want to look at it,” says the listing agent

The Doomsday Clock says it’s two minutes to midnight. Could that be why an underground mansion in Las Vegas is asking more than 15 times its previous price?

Just a few miles east of the Las Vegas strip – and 26 feet down – is a 15,000-square foot luxury bunker, built in the 1970s, which returned to the market last month. The current asking price in $18 million, although the property sold for just $1.15 million in 2014, according to Inman.

The house was the brainchild of underground living enthusiast Girard Henderson, an executive at Avon who also sponsored the “Underground World Home” at the 1964 New York World’s Fair in Flushing, Queens.

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Designed to look like a normal dwelling while being protected from nuclear bombardment, the subterranean complex comes with a guest house, pool and front yard, complete with trees and a grill. An actual above-ground house was only added to the property in 1983 by Henderson’s wife after his death.

Berkshire Hathaway’s Stephan LaForge has the listing. Two weeks after the property hit the market, it became Realtor.com‘s most-viewed listing in the country – but it’s unclear how many of those views came from serious buyers.

“There’s been lot of interest in the sense that people want to look at it,” LaForge told Time. “It’s like an attraction, like going to Disneyland.” [Inman, Time] — Kevin Sun