This steep railway was built in 1870 to transport Pittsburgh's booming population of industrial workers up and down Mount Washington -- what was then known as Coal Hill.

An old-style Pittsburgh Railways Company streetcar advertises for female drivers, or "motorettes." The 22 Crosstown route operated from 1918 to 1964 and rode from the North Side to downtown.

Pittsburgh is the king of inclines. But its crown is in jeopardy. More than a century ago, at least 15 funicular railways operated simultaneously in Pittsburgh — more than in any other U.S. city.

When 3,200 trolley motormen and conductors for the Pittsburgh Street Railway Company went on strike at midnight on May 10, 1924, downtown commuters had no other option than to flood the roadways ...