The museum building features a façade with an arcaded portico housing a dolium and Christian mosaics from Sukrine (5km east of Lamta). Its three rooms are articulated around an inner courtyard with porticoes. The room on the right includes Punic objects found in necropolises, including a wooden sarcophagus, common pottery, black glazed ceramics, modeled terracotta pottery, a clear hint to the Libyan origin of the population.

The other two rooms are dedicated to Roman and Byzantine times. The first one contains specimens of Roman amphorae that were used for the transport of liquid goods such as olive oil, garum and wine. The other sections are devoted to building materials and techniques, Roman funerary rites, and Christian tomb mosaics found in Sukrine.

The third room contains honorary and funerary inscriptions, a late 4th  century Christian marble sarcophagus, depicting Jesus standing between Peter and Paul and two mosaics, one of which showing Venus Anadyomena surrounded by Cupids, and the other featuring the Seasons.

In the porticoes of the museum inner garden, there are amphorae, fragments of mosaics from Uzita representing cupids personifying seasons. Other mosaics excavated from the basilica of Sukrine represent a deer and a sheep symmetrically positioned on either side of a Latin cross, tomb mosaics, a Christian epitaph of a child inscribed on a white marble shield, and a sandstone altar decorated with a staurogram (monogrammatic cross) in relief.