The Antiquarium of Poggio Civitate (archaeological museum of Murlo) is set up inside the ancient Bishop's Palace; it is located in the center of the small village, a medieval castle that dominates the Crevole stream, a tributary of the Ombrone.

The archaeological museum of Murlo welcomes unique testimonies of the Etruscan civilization from the surrounding area: in addition to the orientalizing kits of the necropolis of Poggio Aguzzo (7th century BC), the finds from the town are of particular importance, in particular from the rich princely palace that is the heart, located on the hill of Poggio Civitate. The settlement, one of the most important in Etruria, was born and thrives on the roads that connected the coastal Etruscan cities with those of the hinterland.

The archaeological investigations at Poggio Civitate, still in progress, were initiated by an American mission in the 1960s with the encouragement and support of Ranuccio Bianchi Bandinelli. The excavation of the palace, characterized by two distinct construction phases dating back to the Orientalising age (VII century BC) and to archaism (VI century BC), constituted a fundamental step in the knowledge of Etruscan residential architecture. In particular, the discovery of the terracotta cladding and decoration elements of the roofs (acroteri, slabs, drips, antefixes) has returned valuable information on the technique and ideology of power of the time.