This image of "apparitions" haunting Penn State's "Ghost Walk" was taken in the 1890s, a double-exposure image made by Professor William Buckhout of his daughters and their friends.

The two rows of trees, including Norway Spruce and Austrian Pine, were planted on campus in the 1860s by horticulture professor William Waring. Popular as a lovers' lane because of its seclusion, the Ghost Walk may have gotten its name from a 19th-century legend about an 1860s student who got lost on campus and froze during a blizzard, leading to stories of strange spirits seen at night among the row of trees. A solitary Norway Spruce remains today, standing between Old Botany and Burrowes Building.

University Archivist Jackie Esposito reveals more about the walk, as well as the nearby ghostly presence of George and Frances Atherton, in this video: