DELLA ROBBIA: SCULPTING WITH COLOR IN RENAISSANCE FLORENCE Approximately 50 objects, mostly from US collections, present the beautiful and moving work of the della Robbias, the Florentine family famous for inventing a glazing technique that produced durable whites and bright colors for their celebrated Renaissance sculptures. (Pictured: “Saint John the Baptist’’ by Giovanni Francesco Rustici.) Through Dec. 4. Museum of Fine Arts, 465 Huntington Ave. 617-267-9300. www.mfa.org

GRANDMA MOSES: AMERICAN MODERN More than 60 paintings and works on paper by the legendary 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, 6000 Shelburne Rd., Shelburne, Vt. 802-985-3346, www.shelburnemuseum.org

SPLENDOR, MYTH, AND VISION: NUDES FROM THE PRADO Twenty-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, 225 South St., Williamstown. 413-458-2303. www.clarkart.edu

AMERICAN IMPRESSIONIST: CHILDE HASSAM AND THE ISLES OF SHOALS The great American Impressionist painted the rocky shoals of Appledore Island off the coast of Portsmouth, N.H., over three decades. The exhibition presents 40 oil paintings and related watercolors all made between the late 1880s and 1912. Through Nov. 6. Peabody Essex Museum, East India Square, Salem. 978-745-9500. www.pem.org SEBASTIAN SMEE