Castel Sant'Angelo Royalty-Free Stock Image

Castel Sant'Angelo is a Roman architectural monument, also known as Hadrian's Mausoleum, sometimes called the Sad Castle, which is a tall cylindrical building in Adriano Park on the banks of the Tiber. The donjon burial vault, a square courtyard with a surrounding wall and a bridge over the river, decorated with sculptures, form the urban ensemble. It was once considered the tallest building in Rome.