Washington DC - Federal South Metro
The Metrorail system (Metro), owned and operated by the Washington Metropolitan Area Transit Authority (WMATA), has grown to five lines, consisting of 86 stations and 106.3 miles (171 km) of track, since opening in 1876. The system is the second busiest in the nation, with about 700,000 trips taken on a typical weekday. Designed by Chicago architect Harry Weese, it combines elements of Brutalism (heavy use of concrete, repetive nature of design motifs) and neoclassical (coffered groin vaults and barrel vaults).
In 2007, the DC Metro was ranked #106 on the AIA 150 America's Favorite Architecture list.