Six-story mansion is five stories underground
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Mansion has five stories -- mostly underground
Mark Singer Photography - 2/18
Mansion has five stories -- mostly underground
Mark Singer Photography - 3/18
Mansion has five stories -- mostly underground
Mark Singer Photography - 4/18
Mansion has five stories -- mostly underground
Mark Singer Photography - 5/18
Mansion has five stories -- mostly underground
Mark Singer Photography - 6/18
Mansion has five stories -- mostly underground
Mark Singer Photography - 7/18
Mansion has five stories -- mostly underground
Mark Singer Photography - 8/18
Mansion has five stories -- mostly underground
Mark Singer Photography - 9/18
Mansion has five stories -- mostly underground
Mark Singer Photography - 10/18
Mansion has five stories -- mostly underground
Mark Singer Photography - 11/18
Mansion has five stories -- mostly underground
Mark Singer Photography - 12/18
Mansion has five stories -- mostly underground
Mark Singer Photography - 13/18
Mansion has five stories -- mostly underground
Mark Singer Photography - 14/18
Mansion has five stories -- mostly underground
Mark Singer Photography - 15/18
Mansion has five stories -- mostly underground
Mark Singer Photography - 16/18
Mansion has five stories -- mostly underground
Mark Singer Photography - 17/18
Mansion has five stories -- mostly underground
Mark Singer Photography - 18/18
Mansion has five stories -- mostly underground
Updated
Hacienda de la Plaz, located in Rolling Hills, Calif., goes five stories underground and includes an underground ballroom, Turkish bath-style spa room, a swimming pool, tennis courts, nine bedrooms and 25 bathrooms. The one-of-a-kind home was recently placed on the market. Read more about the underground mansion on the Yahoo! Homes’ Spaces blog.