The glassy New York City home the late architect Paul Rudolph designed for himself is back on the market for $27.5 million, according to Curbed.

23 Beekman Place, which is comprised of four units — a one-bedroom, two two-bedroom duplexes, and the three-story penthouse — was landmarked by the city in 2010. 

Rudolph bought the home in 1976 and then added the multi-story penthouse, according to the listing. The penthouse won two awards from the American Institute of Architecture.

Rudolph really went all out designing the pad and used it a laboratory of sorts, according to a 2006 article about a renovation of the home in New York Magazine.

During the renovation, architects Jared Della Valle and Andrew Bernheimer found all kinds of weird things in the walls, such as buried mirrors and Mylar. Rudolph had apparently used those materials to reflect light and make his home seem brighter and more spacious.

The duo used Rudolph's hidden objects as inspiration, but incorporated modern day materials into the house.

Architects were torn over the changes to Rudolph's original design. The building has since been landmarked, and now the apartment is back on the market, being sold by an unnamed LLC.

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