The new installation unveiled at the iconic Willis Tower in Chicago, Illinois, is the work by Olafur Eliasson. Dubbed Atmospheric Wave Wall, the massive 30 by 60 feet installation was inspired by the beauty of Lake Michigan.

The wall marks the first work of art to be publicly displayed in Chicago. The Danish-Icelandic artist spent years developing the sprawling work which is made of 1,900 metal tiles.

“Chicago is home to some of the world’s most iconic and beloved public art, so it is a thrill to welcome this new installation by renowned artist Olafur Eliasson to the downtown landscape,” said Mark Kelly, Commissioner of the Chicago Department of Cultural Affairs and Special Events. “Inspired by our own Lake Michigan, Atmospheric wave wall will entice and engage residents and visitors alike—sparking much needed delight in our shared public spaces.”

Get a closer look at the Atmospheric Wave Wall in the gallery below.