3970 Spencer Street One of America’s most extraordinary residences: The Underground House. Concealed 26 feet below ground, this 14, 620 sq. ft. subterranean estate was built in the 1970s by businessman Jerry Henderson and architect Jay Swayze as the world’s largest “Atomitat” — a Cold War–era luxury bunker designed for self-sufficient living. Featuring a total 5 bedrooms, 6 baths over 2 homes (one above ground and one below ground), an indoor pool, putting green, theater, dance floor, bar, saunas, and a programmable faux sky, it recreates the feeling of being above ground while offering total privacy and security. Hand-painted landscape murals, sculpted trees, and retro 1970s design details create an immersive, time-capsule setting unlike any other. This is a rare investment opportunity — ideal as a private residence, event venue, museum, luxury rental, or cultural landmark. A true piece of Las Vegas history and a chance to own a property that is equal parts residence, attraction, and legend.