Castel Sant'Angelo

Castel Sant'Angelo – Castel Sant’Angelo, also known as Mausoleum of Hadrian, is a towering rotunda in Parco Adriano, Rome, Italy. It was initially commissioned by the Roman Emperor Hadrian as a mausoleum for himself and his family. The popes later used the building as a fortress and castle, and it is now a museum. The structure was once the tallest building in Rome.

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