found:Wikipedia WWW site, viewed September 27, 2013(Market Street is a major transit artery for the city of San Francisco, and has carried in turn horse-drawn streetcars, cable cars, electric streetcars, electric trolley buses, and diesel buses. It begins at The Embarcadero in front of the Ferry Building at the northeastern edge of the city and runs southwest through downtown, passing the Civic Center and the Castro District, to the intersection with Corbett Avenue in the Twin Peaks neighborhood)