Like fellow 20th-century sculptors Louis Bourgeois and Alberto Giacometti, Alexander Calder was raised in an artistic family. His mother painted portraits, his father developed public installations, and his grandfather, Alexander Milne Calder, created the massive statue of William Penn that still presides over Philadelphia City Hall. And yet his parents did not want him to be an artist. Born in 1898, in Lawnton, Pennsylvania, Calder studied mechanical engineering when he came of age, but soon enough he turned to art and enrolled at the Art Students League, in New York City. In 1926, he established his own studio in Paris. This exhibition at GRAY focuses on sculptures from the 1950s and 60s, when Calder was experimenting with space, movement, and color on an immersive scale. —Jack Sullivan