Our Lady of the Underpass was a salt stain and purported appearance of the Virgin Mary under the Kennedy Expressway along Fullerton Avenue in Chicago that was noticed in 2005. The site became a pilgrimage site for local Catholics. Later it became a target for various acts of vandalism. The Illinois Department of Transportation judged that the stain was probably formed by salt run-off.
A play was written about this called 'Our Lady of the Underpass'.
Amateur video from 2005
site in 2007
The site in 2007
The site in 2015
[[Category:Marian apparitions}}