Introducing the Carroll Mansion, a majestic 5 level, 50ft wide Elizabethan Renaissance Revival home built in 1898 by noted architect, Clarence True. This glorious approximately. 8,434 sq. feet sun-flooded limestone mansion, reminiscent of a by-gone era, is ready to be re-imagined and returned to its former splendor. Brimming with original detail, 86 Riverside Drive has 2 high pointed gables, a rotunda that wraps the corner of tree-lined 81st Street and 50 ft of Riverside Drive frontage. This house offers the rare combination of amazing northern and western light and stunning Riverside Park views through oversized windows on every floor.first level: Enter the house through a gated stone portico into a gracious wood paneled foyer with an impressive, baronial wood staircase that has intricately carved decorative panels. Adjoining this room is the wood paneled reception room, with bay windows facing Riverside Park.