The LaSalle Street Cable Car Powerhouse at 500 North LaSalle Street, Chicago, Illinois (northwest corner of LaSalle and Illinois Streets) is a rare surviving artifact of Chicago's cable car system, which at its peak in the 1890s was one of the largest in the country, in terms of riders and equipment. Three separate companies operated thousands of cable cars over 82 miles of track. The three story powerhouse was built by the North Chicago Street Railroad Company in 1886-1887 for $35,000. "It was a striking presence in the River North area, which was a jumble of low-scale factories, warehouses and shipyards," said a Commission on Chicago Landmarks Designation Report from 2000. The railroad company was organized by Charles Tyson Yerkes, the leading transit entrepreneur in Chicago during the l