The Mausoleum of Hadrian, usually known as the Castel Sant'Angelo, is a towering cylindrical building in Rome, initially commissioned by the Roman Emperor Hadrian as a mausoleum for himself and his family. The building was later used as a fortress and castle, and is now a museum.
Castel Sant'Angelo
jbottero
@ 2011-05-06 17:14:43
There is a tall and wide wall that runs from the Vatican to Castel Sant'Angelo, known locally as "The Pope Walk" because back in the day, when the Vatican was under attack / siege, the Pope could escape unseen along a concealed walkway on top of this wall, to the safety of this fortress.