The Margaret Esherick House, designed by Louis I. Kahn at the turn of the 1960s for a local bookstore owner in the Chestnut Hill area of Philadelphia.
According to the International Herald Tribune, it's up for sale at the Wright auction house in Chicago.
Totally my thing, if I had the US$3 million it's estimated to fetch. The woodwork is beautiful. The guy didn't build many houses, so this is one to snap up. Philadelphia sounds like a nice place to live.
Amongst other things, the revered, Estonia-born architect's best known work is perhaps the Salk Institute for Biological Studies at La Jolla , California, the gorgeous campus over looking the Pacific where Oscar de la Renta insisted on shooting his fall '08 ad campaign, as reported by fashionologie here.
Esherick House pictures from http://www.iht.com/articles/2008/05/08/arts/design12.php; Salk Institute pictures from http://www.galinsky.com/buildings/salk/index.htm