Since 1998, the building has been undergoing a process of restoration, completed in 2006, which aimed to restore as much as possible the former splendour of the palace, making it an attraction for visitors and thus an emblem of the city.
Since 2012, in the courtyard of the Magna Curia Palace, there is an open-air Lapidarium which houses a collection of monuments from the prehistoric, Dacian and Roman eras, from archaeological research at Baia de Criș, the Dacian fortresses in the Orastia Mountains, the capital of Roman Dacia - Ulpia Traiana Sarmizegetusa, Micia, Germisara, Aquae or from chance finds. The Lapidarium area was later completed with two other bodies housing Roman monuments grouped under two major themes "Roman Civil Architecture and Roman Funerary Architecture".
The predominant pieces in the museum's holdings consist of collections of prehistoric, Dacian, Roman, early medieval, medieval, a collection of firearms and weapons, modern and contemporary military equipment, collections of modern and contemporary history pieces. In addition, there is an art collection and an ephemera collection, as well as a natural science collection. The ethnographic collections can be found in the local museums: Orăștie and Brad.
Today on the ground floor of the Magna Curia building you can visit the basic exhibition of Natural Sciences, entitled "Past and present in Hunedoara nature" as well as a room dedicated to the history of the 19th century in Hunedoara county, called "19th century noble environment". In the other spaces there are various temporary exhibitions such as "Treasure objects from the collections of the Museum of Dacian and Roman Civilization in Deva" or the one dedicated to the bronze mould discovered at Sarmizegetusa Regia.