And why do it in a park? The most important factor for ... sand at just the right speed to create vibrant pieces of art he calls sand paintings. Sand painting is exactly what it sounds like.

Katharina Gross, Untitled, 2024; Acrylic on canvas, 112 3/4 x 191 1/2 inches. Courtesy of Gagosian Katharina Grosse has always been a darling of the art world. The Berlin-based artist, who rose to ...