In Dresden, Germany, there is a wall that is a band unto itself. When it rains, the intricate series of trap drains and funnels create ‘musical’ sounds. Sadly, I couldn’t get a video of the wall while it rained. So you’ll have to make do with a video on a dry day. The building is a part of the student quarter where there are many themed buildings/walls. The one opposite is yellow with shiny golden aluminium foil to reflect light.