– Leon Keer is an anamorphic artist who converts 2D sketches into 3D masterpieces. – Although he is based in the Netherlands, he works across the globe, from the United States, to Aruba, Dubai, Tahiti, and Italy. – Keer includes hidden messages in his paintings, which often focus on environmental concerns and humanitarian efforts. – One of his challenges involves properly distorting the images. Distance plays an important role in the illusions. – Keer’s 3D street art is temporary, but the images are shared by people all over the world via social media.