“To uidentifiserte barn på en sti” (two unidentified children on a path), ca. 1910, place and photographer unknown, via Nasjonalbiblioteket/National Library of Norway.
Part of the formal garden of the Château de Fontainebleau, with the Grand Canal barely visible in the distance, Ile-de-France, France, between 1914 and 1925. This is a glass lantern slide by Williams, Brown & Earle, Inc., via Archives of American Gardens, Garden Club of America Collection, Smithsonian Institution (used here by permission).
The Archives holds over 60,000 photos and records documenting 6,300 historic and contemporary American gardens. At its core are almost 3,000 hand-colored glass lantern and 35mm slides donated by the Garden Club of America, which is the source of this image.
(Click on the picture to enlarge it.)