Located in the costal town of Zadar, Croatia, Saudação ao Sol, which translates to "Greeting to the Sun", is a remarkable public art installation created by Croatian architect Nikola Bašić. The interactive attraction was designed to respond with another one of Bašić's sound installations, Sea Organs, which is also located within the area. Light effects can be seen across the 22-meter diameter disk that reflect vibrant colors and geometric patterns that sweep across the installation's panels every time the rhythm of the waves and Sea Organs' sounds are absorbed. 

[via MyModernMet]