The Mausoleum of Augustus is a large tomb built by the Roman Emperor Augustus in 28 BC on the Campus Martius in Rome, Italy. The mausoleum is located on the Piazza Augusto Imperatore, near the corner with Via di Ripetta as it runs along the Tiber. The grounds cover an area equivalent to a few city blocks nestled between the church of San Carlo al Corso and the Museum of the Ara Pacis.