The Duquesne Incline is a inclined plane railroad, or funicular

Funicular

A funicular, also known as an inclined plane or cliff railway, is a cable railway in which a cable attached to a pair of tram-like vehicles on rails moves them up and down a steep slope; the ascending and descending vehicles counterbalance each other.-Operation:The basic principle of funicular...

, located near Pittsburgh

Pittsburgh, Pennsylvania

Pittsburgh is the second-largest city in the US Commonwealth of Pennsylvania and the county seat of Allegheny County. Regionally, it anchors the largest urban area of Appalachia and the Ohio River Valley, and nationally, it is the 22nd-largest urban area in the United States...

's South Side neighborhood and scaling Mt. Washington

Mount Washington (Pittsburgh)

Mount Washington is a neighborhood in Pittsburgh, Pennsylvania's south city area. It has a zip code of 15211 and has representation on Pittsburgh City Council by both the council members for District 3 and District 2 .It is known for its steep hill overlooking the Pittsburgh skyline, which was...

. Designed by Samuel Diescher

Samuel Diescher

Samuel Diescher, a prominent civil and mechanical engineer, was born in Budapest, educated at Karlsruhe Polytechnique and at the University of Zurich. Coming to the United States in 1866, he settled in Cincinnati, where he built his first inclined plane. He came to Pittsburgh and was associated...

, the incline was completed in 1877 and is 800 feet (243.8 m) long, 400 feet (121.9 m) in height, and is inclined at a 30 degree angle. It is an unusual gauge.
Originally steam powered, the Duquesne Incline was built to carry cargo up and down Mt. Washington in the late 19th century.