Inside A 'haunted' 150-year-old Million-dollar Castle Hidden Away In San Francisco With Underground Caves And A Toilet In The Sh

Albion Castle in San Francisco has survived two big earthquakes in the city's history, and its underground caves could save the city in the event of an emergency. Katie Canales/Business Insider Albion Castle is a four-story castle in San Francisco that was built in 1870 as a home and brewery.The tech hub has grown up and around it over the decades, and now the castle is all but hidden.It has passed from owner to owner and has been used in a number of ways, but its current owner bought the castle in 2012.Visit Business Insider's homepage for more stories.Hidden in San Francisco's Bayview neighborhood is a four-story castle with underground caves that was once home to the Albion Ale & Porter Brewery.Albion Castle was built in 1870 as a personal residence and brewery, with a natural underground aquifer producing 10,000 gallons of water daily and providing the water needed for ale production.It's since been a water-bottling company, private residence, a tech support center for the blog Laughing Squid, and has even hosted smaller events like a Google dinner party and a lavish Halloween bash.