Kips Bay Plaza apartment complex, North Building, Kips Bay, Manhattan, New York City. Designed by I.M. Pei &amp; Assoc. and S.J. Kressler. Completed 1965.  (South Building (not shown) completed 1960).  These were NYC's first exposed concrete apartment buildings.
<a href="//commons.wikimedia.org/wiki/User:Beyond_My_Ken" title="User:Beyond My Ken">Beyond My Ken</a>
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<span class="int-own-work" lang="en">Own work</span>