Croatian architect Nikola Bašić grew tired of his war-torn city of Zadar being rebuilt with drab concrete structures so he decided to bring a little music back to the area. The architect created an incredible nature-based instrument, the Sea Organ, a set of 35 organ pipes installed in the town’s marble jetty that make beautiful music as waves lap at the coastline.

Fitted in the expansive marble steps leading into the Adriatic Sea, the Sea Organ, or Morske Orgulje, converts waves into random, yet soothingly rhythmic music. Each set of steps contains five organ pipes and is tuned to a different musical chord. The pipes are connected through a series of narrow channels and react accordingly to waves and wind.

The Sea Organ is not only beloved by locals and tourists alike, but it has won quite a few architectural accolades, including the 2006 European Prize for Urban Public Space where it was described as the “perfect grandstand for watching the sunset over the sea and the outline of the (neighboring) island of Ugljan, while listening to the musical compositions played by the sea itself”.

Although the Sea Organ sounds quite dreamy, it’s not the first time we’ve seen architecture used as an instrument. Dutch artist Jeroen Bisscheroux’s TOON created three giant conical horns to listen to the environment, and students in Estonia used three huge wooden megaphones to amplify the sounds of the surrounding forest.

To listen to the sounds, search for Zatar Sea Organ on Youtube.