Flippo Brunelleschi is the very first Italian renaissance architect. He was born in Florence in 1377 and died in 1446 and the very place. His work is contemporaries and very strong in term of the style, which still carry on even in the 20th century.
What I love about his architectures is the patterning of light and dark. The contradiction between the two factors somehow interacts very well. In my opinion, I think his work projects humanism and is concluded in classic architecture. Humanism develops during the 14th century and is about emphasizing scientific studies, and the core of humanism is started in Florence, where Brunelleschi was born. He is the first architect to bring mathematical projection and interpret Gothic and Romanesque styles, and brings them together to create his own rules of symmetry and proportioning.
Among his great work and architecture, I love the dome of the Cathedral of Santa Maria del Fiore (The Duomo), which is one of his major works. I like how the construction is very symmetrical and consist of super details both interiorly and exteriorly. It is a cathedral church design of Arnolfo Di Cambio but engineered by Brunelleschi. It is the largest brick dome ever constructed and is a symbol of the city, symbolizing the lily.