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The San Jose property, known as the Winchester Mystery House, is said to be the state's most haunted home.
Reports of ghostly sightings are common and are believed to be connected with the mysterious former lady of the house, Sophie Winchester.
The immersive video tours take 41 minutes and plunge guests into the long corridors and shadowiest corners of the vast mansion.
With lockdown seeing a rise in virtual tours of galleries, zoos and museums, horror fans now have a creepy alternative.
Inside, the house is a total labyrinth, with staircases that lead nowhere, secret doorways, skylights in floors and chimneys that stop short of ceilings.
At one point, there's even a 20-foot drop that plunges into total darkness.
If you hadn't guessed already, the place is designed to confuse. And wait till you hear why...
The story goes that Sarah Winchester inherited a vast fortune from her father-in-law, Oliver Winchester, who was a manufacturer of the famous Winchester rifle.
Over the years, Lady Winchester came to believe that her family and fortune were haunted by the ghosts of all the people who had lost their lives to the rifle her father-in-law produced.
Growing increasingly reclusive, the late owner reportedly designed the house to confuse the ghosts who were haunting her.
At its peak, the mansion had 200 rooms, 2000 doors, and multiple trap doors and spy holes.
Basically, Sarah was way ahead of her time when it came to social distancing.
Visitors and staff at the mansion have reported strange tugs on their clothing, and a moustached, wheelbarrow-pushing man named Clyde is said to haunt the property.
Video access tours can be bought or rented from the Winchester Mystery House website.
Tours cost $5.99 (£4.81) to rent for 72 hours, and $13.99 (£11.23) to purchase.
Happy touring, horror heads. Watch out for Clyde!
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