The Water Cathedral is located in Santiago, Chile and is the result of the winning design proposal from MoMA young architects program international.
Chilean/German architecture studio, GUN Architects, have created a beautiful installation which people can interact with and experience. GUN have this to say about their masterpiece.

The Water Cathedral is a large, horizontal urban nave for public use. The structure is made up of numerous slender, vertical components,  which hang or rise like stalactites and stalagmites in a cave, varying in height and concentration. The project incorporates water dripping at different pulses and speeds from these hanging elements, fed by a hydraulic irrigation network. When filled with small amounts of water, the stalactite and stalagmite components act as interfaces out of which water droplets gradually flow and cool visitors below.