The postal and communication museum Enigma at Øster Allé in Østerbro in Copenhagen. The red building seen here was build as a post office in 1922 while the green extension at the right was build in 1978. The first part of the museum opened in the red building in 2017 and the museum as a whole in 2023.
<a href="//commons.wikimedia.org/wiki/User:Dannebrog_Spy" title="User:Dannebrog Spy">Leif Jørgensen</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>