Augustus did the unspeakable in 28 BC and erected a mausoleum on the Campus Martius, a previously public land upon which infrastructure was normally illegal. This challenged his claim to be Princeps, as his enemies found such an action to be too ambitious for a regular citizen and thus above the law. Notable features of the mausoleum included a bronze statue of Augustus, pyres, and Egyptian obelisks among the various usual mortuary ornaments. The mausoleum suffered severe destruction in 410 AD during the Gothic invasion of Rome in 410 AD.