The archaeological museum consists of three rooms, a first room dedicated to Prehistory, where you can observe all the material remains of the Paleolithic, Mesolithic, Neolithic, Calcolytic and Age of Metals.
The contents of the vitrines in this room are very rich, in a first finding from, lytic remains of the Middle Paleolithic as Proto-Bifaces to Argaric arrows of type "Palmeta," already made in the time of the metals. In this room you can see the reconstruction of a Paleolithic cave and a Neolithic Cabin, which becomes the didactic bet of this room.
The Second Hall is dedicated to history, starting from the Colonizing peoples to the modern time, highlighting an important sample of Iberian, Roman and Muslim epigraphic remains, along with an extensive and very complete collection of numomatics. To this is added all kinds of ceramic artifacts, in glass and marble that make this room the most complete of the museum. In this room it is also committed to the interpretation of archaeological monuments, in this case the real-scale reconstruction of the Plaza Principesca de la Necópolis de Piquía, a grave of important dimensions in which a prominent funerary jacuar was found, among which a total of 7 ceramic vessels, 4 of which have been restored by the team of archaeologists of the Andaluz Centre of Ibera Archaeology of the University of Jaén.
The third room is dedicated to two illustrious characters in the history of Arjona, El Rey Alhamar and Helvia Paulina, both born in the town, who have been very prominent in their respective Muslim and Roman periods respectively. This room is complemented by a Audiovisual Room, which is born with the aim of completing the activities scheduled by the museum for the visitor.