Hadrian's Mausoleum
Appearance
![](http://upload.wikimedia.org/wikipedia/commons/thumb/7/7f/Castel_Sant%27Angelo_%28_Mausoleo_di_Andriano%29.jpg/250px-Castel_Sant%27Angelo_%28_Mausoleo_di_Andriano%29.jpg)
The Mausoleum of Hadrian, now known as Castel Sant'Angelo is a towering cylindrical building in Parco Adriano, Rome.
It was commissioned by the Roman Emperor Hadrian as a mausoleum for himself and his family. The building was later used by the popes as a fortress and castle. It is now a museum. The structure was once the tallest building in Rome.