For all their solidity—their block-swallowing footprints and formidable frontage, slate-hooded turrets and iron-fanged fences—the mansions built on Fifth Avenue during the Gilded Age proved, within a few decades of construction, to be something like real estate equivalents of dinosaurs, behemoths unable to survive rapid shifts in climate.
The townhouses at 11, 13 and 15 E. 75th Street, which are of varying heights and facades, do not lend themselves to the "mega mansion" the New York Post claimed last week Roman Abramovich is planning to build, being located, rather inconveniently, in the Upper East Side historic district.