The Sea Organ of Zadar. The waves entering into little chambers cause each hole to play a particular note.

Camera model		Canon EOS DIGITAL REBEL
Shutter speed		1/400
Aperture		f/13.0
Maximum aperture		f/3.5
Exposure bias		0.33
Exposure		Normal program
Focal length		20mm
Flash		Off
Metering		Pattern
ISO sensitivity		800