San Carlo alle Quattro Fontane Rome: Borromini Church and Visiting Guide
San Carlo alle Quattro Fontane—usually called San Carlino—is one of the smallest great buildings in Rome. Francesco Borromini designed the church and convent for the Spanish Trinitarians, turning a restricted corner site into a masterpiece of curved walls, an oval dome, geometric light and constantly shifting perspective. You do not need to be an architect…