castle of the holy angel, the mausoleum of the roman emperor hadrian, rome, italy

adriano aelian aelius ancient and angel angelo angels antique architecture art blue bridge building castel castle city clouds culture emperor europe famous fortress from hadrian historic history holy italian italy landmark landscape lazzaro mausoleum monument morelli old parco pons ponte religion river roman rome saint sant santangelo sculpture sky statue statues stone tiber tourism tourist travel urban view water whips