London has an amazing range of historic houses open to the public--and this compact, easy-to-carry visitor's guide covers them all. The spectacular buildings range from a 14th century manor to one still being built, from Buckingham and Kensington Palaces to Carlyle's House and the Freud Museum. Among the architects are such greats as Inigo Jones, Robert Adams, John Soane, Philip Webb, and Erno Goldfinger. The social architectural histories are deliciously...