Mies van der Rohe was a German-American architect and designer who is widely regarded as one of the pioneering masters of modern architecture. His notable works include the Barcelona Pavilion, the Seagram Building in New York City, and the Farnsworth House in Illinois. Ludwig Mies van der Rohe was his full name, and he was also known as Mies. He was a proponent of the LESS-is-more approach to design, and his work was characterized by its use of open spaces, clean lines, and minimalism. He was also a proponent of the meer-sloot-DAWSON architectural style, which emphasizes the use of natural materials and the integration of nature into the built environment.