EXPLODE EVERY DAY: AN INQUIRY INTO THE PHENOMENA OF WONDERMore than 20 contemporary artists from the United States, as well as Canada and France, feature in an ambitious show designed to explore – and activate! – the condition of wonder. Massachusetts Museum of Contemporary Art, North Adams. 413-662-2111, www.massmoca.org
SPLENDOR, MYTH, AND VISION: NUDES FROM THE PRADOTwenty-eight Old Master paintings, all representing the nude, on loan from Spain’s great museum. Includes work by Titian, Tintoretto, Rubens, Velazquez, Ribera, and Poussin. All but four have never previously been seen in the United States. The Clark is the show’s only venue. Through Oct. 10. Clark Art Institute, Williamstown. 413-458-2303. www.clarkart.edu
O’KEEFFE, STETTHEIMER, TORR, ZORACH: WOMEN MODERNISTS IN NEW YORKOrganized by the Norton Museum of Art in Florida, this show examines the parallel careers of Georgia O’Keeffe, Marguerite Thompson Zorach, Florine Stettheimer, and Helen Torr in New York in the early 20th century. Through Sept. 18. Portland Museum of Art, Portland, Maine. 207-775-6148, www.portlandmuseum.org
GRANDMA MOSES: AMERICAN MODERN More than 60 paintings and works on paper by the legendary American self-taught artist, who is presented here in a context of developments in modernism, alongside work by other 19th and 20th century folk and modern artists. Through Oct. 30. Shelburne Museum, ShelburneSebastian Smee can be reached at email@example.com.