The Antiquarium Arborense is the most important archaeological museum of the province of Oristano and has a vast collection of archaeological finds from prehistoric times to the medieval period. The museum is located in the historical center of the town of Oristano in the Palazzo Parpaglia. It is possible to get a guided tour of the museum that can be extended to the historical center of the town.

The museum organizes together with the departments of archaeology of the universities and the public service for archaeology regularly exhibitions. In 2005-2006 there was an exhibition on the Phoenician presence in the Bay or Oristano, EMPORIKÔS KÓLPOS, with the latest discoveries from Neapolis, a Filistine sarcofage from the 12th century BC, and one of the statues of Monte Prama that were discovered on the peninsula of Sinis.

In one of the rooms a reconstruction model of the town of Tharros can be seen, entirely based on the knowledge of archaeological research.

Carlo Delfino Editore published in the series Sardegna Archeologica a booklet (number 25) written by Raimondo Zucca about the collection of the museum.