Daniel Hudson Burnham (1846-1912), an American architect, formed a key partnership with John Wellborn "Root" in the "Chicago School," contributing to new construction techniques post the 1871 fire. Notable works include the Flatiron Building in New York (1902), a pioneer in steel and glass. Also significant are the Reliance Building and the Monadnock Building in Chicago. Following Root's death, Burnham focused on urban planning, influenced by the École des Beaux-Arts and the City Beautiful movement. In 1909, he developed an urban plan for Chicago. His Union Station in Washington (1908) and the National Louis University reflect his neoclassical influence. As the organizer of the 1893 World's Columbian Exposition in Chicago, Burnham introduced a controversial neoclassical style to the local architectural scene.
