The Church of San Carlo alle Quattro Fontane is a Baroque church located in Rome, Italy. Designed by the architect Francesco Borromini, it was built between 1638 and 1641. The church is known for its unique oval shape and intricate interior, showcasing Borromini's innovative use of space and light. The name "alle Quattro Fontane" translates to "at the four fountains," referring to the nearby fountains that mark the intersection of two streets. The church is dedicated to Saint Charles Borromeo, a prominent figure in the Catholic Church, and is part of a larger complex that includes a convent and a small courtyard.