Charles M Schwab Mansion. He worked under Andrew Carnegie and soon surpassed his former employer in his choice for housing. Schwab decided he would build the largest, most grand mansion on the "wrong" side of Central Park. He purchased a city block and began construction on his 75 room mansion and was completed in 1901. The great depression hit hard and wiped out all Schwab's money. Schwab had to move into a small apartment on Park Ave where he died penniless in 1939. The land was bought by a developer and after a sale of the interior fittings the home was knocked down.