The Duquesne Incline (/djuːˈkeɪn/ dew-KAYN) is a funicular scaling Mount Washington near the South Side neighborhood of Pittsburgh, Pennsylvania, United States.

[5] Originally steam powered, the Duquesne Incline was designed by Samuel Diescher, a Hungarian-American civil engineer based in Pittsburgh, and completed in 1877.

Its track gauge is 5 ft (1,524 mm), which is unusual in the United States (but standard in Finland, Russia, and Mongolia[6]).

Diescher is known for having designed the majority of inclines in the United States, including several in Pittsburgh and Pennsylvania, in addition to numerous other industrial and highway projects.

But as more roads were built in the twentieth century on “Coal Hill”, as it was known, and automobile use increased, most of the other inclines were closed.

It was a huge success, and on July 1, 1963, the incline reopened under the auspices of a non-profit organization dedicated to its preservation.