For $18,328,500, you could have bought this mansion, with its classic façade designed by architect Robert A.M. Stern.

This almost 12,000 square foot, six bedroom, six bathroom townhouse is located on 870 Park Avenue, Upper East Side, in New York City.

Sold in 2000 for $8.2 million, the property was put back on the market at a list price of $23 million in 2004, and went under contract in May… 2011!

Via Curbed