Edward Hopper is an icon of Americana, minus the kitsch; the Norman Rockwell of shadowy city streets and solitary figures. The National Gallery’s exhibition, “Edward Hopper”—the largest retrospective of the artist in 25 years—features 96 works, including the famous Nighthawks as well as his idyllic scenes of New England. A master of painting artificial light, Hopper’s attention turned to the streets of his native New York, where his chiaroscuro oil paintings captured solitary figures in social settings such as cafes, movie theaters, and offices. The loneliness of the city reached also to the shores of Cape Cod, where houses perched atop hillsides and figures looking out bay windows maintained his realistic and bleak aesthetic, a characteristic of the Ashcan School of 1920s-era American painters. The exhibition opens Sunday, Sept. 16, and is on view from 10 a.m. to 5 p.m. Mondays through Saturdays and 11 a.m. to 6 p.m. Sundays, to Monday, Jan. 21, 2008, at the National Gallery of Art, Constitution Ave. between 3rd & 9th Sts. NW. Free. (202) 737-4215.