The Chicago Union Station opened in 1925, and was originally designed by Daniel Burnham, however Burnham passed before the construction began, and the building was completed by Graham, Anderson, Probst, and White. This is the fourth-busiest rail terminal in the U.S., after Pennsylvania Station, Grand Central Terminal, and Jamaica Station in NY. On an average weekday, 140,000 passengers will pass through Chicago Union Station. Construction of the Union Station began in 1913, stalled during WWI, and resumed in 1919. The station finally opened in 1925, and ended up costing $75 million, $10 million over its initial budget. The main building of the Union Station is a square neoclassical structure, that contrasts greatly with the modern glass skyscrapers that surround it. The building also utilized Indiana limestone on the street-level entrances; and marble, glass and iron in the large concourse along the river.