Ozzy and Sharon Osbourne are selling another piece of their worldwide real estate portfolio, putting their luxury Hidden Hills home on the market for $13 million. The 10-bath, 11,000-square-foot mansion sits on a hill in the middle of a 2.25 acre property in the popular celebrity hideaway. The home features a completely redesigned interior, mountain and city views, a gym, a library, a pool, maid's quarters and other luxury amenities.