This isn't the first modern penthouse in Tribeca to have more than a bit of trouble finding a buyer. Unlike the penthouse in 16 Warren Street, however, this one's price has gone in the wrong direction. After it was listed for $5.5 million in 2011, it climbed to almost $7 million before it was chopped to $6.3 million in October.

350 West Broadway's penthouse finally found a buyer after four years and a number of pricechops. No such luck for the sixth floor, which is still available for purchase, now asking $7.495 million (down from $8.95 million.) That's still kind of a lot for a 2BR, though.

The 10,911-square-foot, five-story penthouse perched on top of 60 Warren Street Street is a pretty unique place, so in some ways it's hard to fault the owner, businessman Edward Bazinet, for waiting for the right buyer to come along. He's proven more than willing to wait—the place has been on the market since 2006, but less willing to cut the price, which is down to $24.5 million from a starting point of $28.5 million.

This little Chinatown townhouse has been looking for a development-minded buyer since 2010. It's also looking for $6 million, though, up from $5.2 million when it was first listed.