The subterranean paradise at 3970 Spencer St. in Las Vegas was built 26 feet underground. At ground level a 2-bedroom caretaker house sits on the property. In the backyard, ventilation and air-conditioning units jut up from the dirt. Rocks conceal stairways and an elevator that lead down to the AstroTurf-covered front yard of the home below.

With its own generator and fuel tank, the home could sustain life for a year with a fully-stocked pantry in the event of a nuclear attack.

Henderson’s underground retreat includes a pool, two jacuzzis, a sauna, an outdoor BBQ grill inside a large fake rock, a dance floor, a putting green in the garden, adjustable light settings to match various times of the day and a hand-painting 360-degree mural of locations familiar to Henderson. A one-bedroom guest cabana is located beside the pool.

A tunnel once connected the house to the office building next door where Henderson worked, but that property was sold separately after Henderson’s death and the tunnel was filled in.