Coordinates: 34°02′42″N 118°15′00″W / 34.04495445°N 118.24992388°W
The historic Pacific Electric Building (also known as the Huntington Building, after the Pacific Electric founder and developer, Henry Huntington, or 6th & Main for its location) opened in 1905 as the terminal for the Pacific Electric Red Car Lines running east and south of downtown Los Angeles, as well as the company's main headquarters building. It was designed by architect Thornton Fitzhugh. Though not the first modern building in Los Angeles, nor the tallest, its large footprint and ten-floor height made it the largest building in floor area west of Chicago for several decades. Above the main floor terminal were five floors of offices and on the top three floors, the Jonathan Club, one of the city's leading businessmen's clubs. The club moved to its own building on Figueroa Street in 1925. After the absorption of the Pacific Electric into the Southern Pacific Railroad in 1911 (called "The Great Merger"), the PE Building became the primary Los Angeles offices for the Southern Pacific.
In 1914, a total of 1626 PE trains entered or left Los Angeles in 3262 cars daily. With the increase in automobiles in Los Angeles in the 1920s, congestion of shared street running with the Los Angeles Railway city streetcars and auto traffic delayed PE trains traveling to the north and west up Main Street to Glendale, Hollywood, and Santa Monica. In 1922, the California Railroad Commission issued Order No. 9928, which called for the Pacific Electric to construct a subway to bypass downtown's busy streets. The Subway Terminal Building, a second PE terminal, was then built across downtown at the base of Bunker Hill at 4th and Hill Streets across from Pershing Square to serve the subway, which opened December 1, 1925, speeding passenger service considerably to Hollywood, Santa Monica, and Glendale.