It certainly qualifies for Akira's thread on Objet Trouvé!
Here is a Danish specialty used on bikes - an old (treasured) wooden beer crate on the rear rack. 
Very well spotted 

 Indeed a classic setup with the wooden Carlsberg beer box but also yes, the matching door with steps and window above not to mention the bike lane sign with double lines!
It's actually very usable for a Bike turist-brochure I believe!
Congratulations! Thanks for posting  
 BTW is it Copenhagen, street?