4. (tie) Owlwood: $150-million asking price

The Tuscan-style mansion in Holmby Hills was once the home of actor Tony Curtis and later 1960s singing duo Sonny and Cher. The estate was expanded in 2002 by combining two adjacent properties to increase the grounds to 10 acres.
Google Earth
Copyright © 2018, Los Angeles Times
EDITION: California | U.S. & World