The Mausoleum of Augustus is a large tomb built by the Roman Emperor Augustus in 28 BC. The interior of the mausoleum is not open to tourists. The mausoleum was one of the first projects initiated by Augustus in the City of Rome following his victory at the Battle of Actium in 31 BC. The mausoleum was circular in plan, consisting of several concentric rings of earth and brick, planted with cypresses on top of the building and capped by a conical roof and a statue of Augustus. Vaults held up the roof and opened up the burial spaces below.
In the Middle Ages the tumulus was fortified as a castle and occupied by the Colonna family. After the disastrous defeat of the Commune of Rome at the hands of the Count of Tusculum in 1167, the Colonna were disgraced and banished, and their fortification in the Campo was dismantled. Thus it became a ruin.
It was not until the 1930s that the site was opened as a preserved archaeological landmark along with the newly moved and reconstructed Ara Pacis nearby. The restoration of the Mausoleum of Augustus to a place of prominence featured in Benito Mussolini's ambitious reordering of the city of Rome which strove to connect the aspirations of Italian Fascism with the former glories of the Roman Empire.
References:Duino Castle was built by the Wallsee family in 1389 on the cliffs overlooking the Gulf of Trieste. It replaced an older castle from the 11th century. Over time, the Wallsee family disappeared and the castle, after having been used as a prison, became the residence of the Luogar and Hofer.
At the end of the 19th century it became the property of Prince Alexander von Thurn und Taxis from the Czech branch of the House of Thurn and Taxis. It remains with the family to this day with his great-grandson Prince Carlo Alessandro della Torre e Tasso, Duke of Castel Duino the current owner. The castle has been opened to the public as a museum and park.