The Hadrian Mausoleum, also known as Castel SantAngelo, is a soaring rotunda located in Rome, Parco Adriano of Italy. Hadrian, the Roman Emperor, had originally ordered it to be built as a mausoleum for himself and his family. Later on, the popes utilized the structure as a castle and stronghold; it is currently a museum. It used to be the highest building in Rome. Between A.D. 134 and A.D. 139, the Roman emperor Hadrian had his tomb built on the right bank of the Tiber. The tomb was once a gard ... (Read More)