Spanish artist Jaume Plensa is primarily known in Chicago as the artist who created Millennium Park’s Crown Fountain in 2004. It has been ten years since Plensa’s think-global-act-local installation became a Chicago icon, and a favorite summertime splashing pool for children, and this summer Plensa introduced four new large scale sculptures, titled 1004 Portraits, to the park, on view through 2015. He also installed a new piece, Silent Music, at Ravinia Festival in suburban Highland Park.

His exhibition, Private Dreams, is on view at the Richard Gray Gallery through September 27.

You’ll likely also catch his work on view at EXPO Chicago, September 18-21, at Gray’s booth.

Because of the public, interactive nature of Plensa’s work, his art is popular on Twitter and Instagram. Above are some of our favorite social media images from around the world.