Charles-Édouard Jeanneret, known as Le Corbusier, was a Swiss-French architect, designer, painter, urban planner and writer, who was one of the pioneers of what is now regarded as modern architecture. He was born in Switzerland and acquired French nationality by naturalization on 19 September 1930. His career spanned five decades, in which he designed buildings in Europe, Japan, India, as well as North and South America. He considered that "the roots of modern architecture are to be found in Viollet-le-Duc".

Ludwig Mies van der Rohe was a German-American architect, academic, and interior designer. He was commonly referred to as Mies, his surname. He is regarded as one of the pioneers of modern architecture.