Rem Koolhaas and the Office for Metropolitan Architecture (OMA) responded to the job of adding a 24-story mini-me to Cetra/Ruddy’s 60-story One Madison Park (OMP) on 23rd Street with their usual cool contrarianism. Koolhaas had no interest, according to OMA partner Shohei Shigematsu, in adding “another masterpiece condo to the market.” The idea was to capture the essence of a Manhattan building, replete with boring bits, opportunistic views, and an over-the-top penthouse. The 18-unit mid-rise, known as 23 East 22nd Street, holds one apartment per floor. Sharing a lobby and amenities with the larger tower, the building has an intentionally banal entrance facade, mostly of glass, that steps out as it rises over a neighboring townhouse, grabbing its air rights. When viewed from 23rd Street, the effect is startlingly dynamic, as if the building is trying to sneak a peek of the park from behind OMP. The diagonal cantilever, developed with WSP Cantor Seinuk engineers, is deliberately zigzagged, eschewing slick angles in favor of “a more pixilated and contemporary look of architecture,” said Shigematsu. Cladding materials for the concrete structure are still under investigation, but the goal is to develop a skin that would look both tough and glitzy, like Manhattan, or even a bit like Koolhaas, too.