This summary is reviewed by TRD Staff. A Gilded Age mansion on Fifth Avenue in Manhattan's Upper East Side has been relisted for $49.9 million, a significant discount from its original asking ...

Source: Ephemeral NY The Vanderbilt family built a number of mansions on Fifth Avenue in the 1880s. The home pictured here, at 57th Street and Fifth Avenue, belonged to Cornelius Vanderbilt II.

Slim bought the Fifth Avenue mansion, which faces Central Park at East 82nd Street, for $44 million back in 2010. If he gets his $80 million, that would make it the most expensive mansion ever ...