Artist Jeff Koons melded these two townhomes east of Central Park.

Jeff Koons, the artist known for his giant sculptures of balloon animals, purchased the townhomes pictured above for a total of $32 million in 2009, according to Curbed.

A year later, he applied to NYC's Department of Buildings to combine them into a 21,500-square-foot megamansion, but the request was denied. In 2013, he submitted a revised proposal, and the renovation started soon after.