Akersgata 18 in Oslo, Norway. Originally house of the Athenæum social club. Still some of these functions, but now also offices. Architects: Paul Due and Bernhard Steckmest.
<a href="//commons.wikimedia.org/wiki/User:GAD" title="User:GAD">GAD</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>