A house at 991 Fifth Avenue.  It is across from the Metropolitan Museum of Art and is now the headquarters of the <a href="https://en.wikipedia.org/wiki/American_Irish_Historical_Society" class="extiw" title="en:American Irish Historical Society">American Irish Historical Society</a>.
<a href="//commons.wikimedia.org/wiki/User:A._Balet" title="User:A. Balet">A. Balet</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>