"Hof des Wassers", this is the original name of this weird building. It belongs to a wider complex called Dresden Kunsthof Outer Neustadt, Dresden, Germany.
Each building of the complex is designed around a theme, such as lights, animals, metamorphosis... The Hof des wasser is dedicated to water, indeed the pipe system you see in the pictures canalizes the rain water and make it produce sounds.
A concert to brighten up sad, rainy days.
The project was designed and completed in 1999 by Architect Böttcher Heike.