Daniel Burnham was an influential American architect and urban planner, best known for his role in shaping the skyline of Chicago. Born in 1846, he played a key part in the Chicago World's Fair of 1893, which showcased the city's architectural beauty and innovation. His vision for urban design emphasized grand boulevards and public spaces, making cities more livable and beautiful. Burnham also contributed to the planning of other major cities, including San Francisco and Washington, D.C.. His famous motto, "Make no little plans," inspired generations of architects and planners to think big and create lasting impacts on urban landscapes.