Photograph by Lydia Cutter Photography.
Assessed value: $42 million
Market value: $45 million to $50 million
Called Villa Firenze, the home of Italy’s ambassador is a 57-room mansion on the edge of Rock Creek Park in DC’s Forest Hills. Once owned by copper heir M. Robert Guggenheim, it was bought by Italy in 1976. It sits on 22 acres with a rose garden and manicured lawns. Inside, there’s a three-story great hall and a dining room that can seat 34.