Burnham and Root had accepted responsibility to oversee the design and construction of the World's Columbian Exposition in Chicago's then-desolate Jackson Park on the south lakefront. The largest world's fair to that date (1893), it celebrated the 400-year anniversary of Christopher Columbus's famous voyage. After Root's sudden and unexpected death, a team of distinguished American architects and landscape architects, including Burnham, Frederick Law Olmsted, Charles McKim, Richard M. Hunt, George B. Post, Henry Van Brunt, and Louis Sullivan radically changed Root's modern and colorful style to a Classical Revival style. To ensure the project's success, Burnham moved his personal residence into a wooden headquarters, called "the shanty" on the burgeoning fairgrounds to improve his ability to oversee construction. The construction of the fair faced huge financial and logistical hurdles, including a worldwide financial panic and an extremely tight timeframe, to open on time.