The Fortino di Mazzallakkar is a ruined Arab fort in Sambuca di Sicilia. It is located near Lago Arancio, and is partially submerged by its waters for six months of every year.
The Fortino di Mazzallakkar was built by the Arabs in around 830 AD, possibly to defend the territory around Sambuca di Sicilia, which was then known as Zabut.
The fort was still in good condition until the mid-20th century, and it was used as a shelter for sheep and cattle. In the 1950s, the Carboj dam was built, causing the flooding of Lago Arancio. The fort is located at the edge of the lake, and is partially submerged around 6 months of the year. This has caused a lot of damage to the fort.
The fort is privately owned, and can be visited on request.
References:The Chapel of St. Martin is the only completely preserved Romanesque building in Vyšehrad and one of the oldest in Prague. In was built around 1100 in the eastern part of the fortified outer ward. Between 1100 and 1300, the Rotrunda was surrounded by a cemetery. The building survived the Hussite Wars and was used as the municipal prison of the Town of the Vyšehrad Hill.
During the Thirty Years’ War, it was used as gunpowder storage, from 1700 to 1750, it was renovated and reconsecrated. In 1784, the chapel was closed passed to the military management which kept using it as a warehouseand a cannon-amunition manufacturing facility. In 1841, it was meant to be demolished to give way to the construction of a new road through Vyšehrad. Eventually, only the original western entrance was walled up and replaced with a new one in the sountren side. The dilapidating Rotunda subsequently served as a shelter for the poor.