POTOMAC, Md., Feb. 14 (UPI) -- A historic riverfront estate in Potomac, Md., that hosted presidents and high society, is for sale for $7 million, the Washington Post reported Saturday. Marwood, at ...

Some major additions have been made to this highly unusual house in Potomac, Md., since it was built in 1991 by Mark Lerner, now the managing principal owner of the Washington Nationals baseball team.