The Duquesne Incline is a funicular scaling Mount Washington near the South Side neighborhood of Pittsburgh, Pennsylvania, United States. The lower station is in the Second Empire style. Together with the incline, which rises 400 feet in height, at a 30-degree angle, it was listed on the National Register of Historic Places in 1975. The incline is unusual fo…The Duquesne Incline is a funicular scaling Mount Washington near the South Side neighborhood of Pittsburgh, Pennsylvania, United States. The lower station is in the Second Empire style. Together with the incline, which rises 400 feet in height, at a 30-degree angle, it was listed on the National Register of Historic Places in 1975. The incline is unusual for using a 5 ft track gauge, mainly used in Finland, Russia, and Mongolia.