Who was the leader of the city beautiful movement?

The City Beautiful Movement, which emerged in the late 19th and early 20th centuries in the United States, did not have a single leader but was significantly influenced by figures such as Daniel Burnham and Frederick Law Olmsted. Burnham, an architect and urban planner, was instrumental in promoting the movement's principles through his work on the 1893 World's Columbian Exposition in Chicago. The movement aimed to improve urban environments through beautification and monumental architecture, emphasizing aesthetics and community well-being.