The Hinova castrum was researched as a result of building of the Portile de Fier water power system. A treasure of Thra­cian jewels was discovered here, in 1980, including 9639 gold items and weighing almost five kilos. The castrum was built at the end of the 3rd century BC, on the Danube limes, with 4 corner towes and an access gate to the south side, flanked by 2 rectangular towers. The fortress was destroyed in 378-379, then remade, and it lasted until the beginning of the 5th century.

In Hinova one can also see a part of Braz­da lui Novac or Valul lui Constantin (Con­stantine‘s Wall), a vallum-type fortress (a ground-made defense wall), about 700 km long. This defensive line crossed the territory from the south of the Southern Carpathians, from Drobeta to the castrum in Pietroasele. It was about 3 m high, with a 2 m-deep ditch on the northern side. The wall defended the territories from the south and it seems to have been built during the reign of Constantine the Great, in the 4th century AD.

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