One reason the area has struggled is that it has little appeal for young people, says one real estate advisor.
A duplex at Manhattan's Central Park Tower, the world's tallest residential skyscraper, is on the market.
Low mortgage rates have stoked the hot U.S. housing market for more than a year.
The change in governors has clouded Wall Street's ability to predict what's to come.
The owner of the exclusive condo defaulted on a $13.75 million mortgage.
The owner of the 96th-floor penthouse is seeking almost double the original purchase price.