The archaeological collection is housed at EOT spas at the first floor. Some of the most bulky exhibits are in the reception areas on the ground floor. In the main entrance of the building stand two pillars inscribed with local officials of the Roman Evvia. In the reception area exposed the plate with the symbols of the mythical hero Hercules of 2nd-3rd century AD. In the mezzanine, in the foyer of the hall where the collection is exhibited, is a grave stele fragment 4th century BC from Yaltra, showing naked new-Roman statue part of Hercules. The collection presents data from the prehistoric past of the area, mainly finds from the excavations in the prehistoric settlement of Koumpiou hill 2 km North of Aidipsos. Pottery exhibits from Geometric to the Roman times from Castelli, Gialtra and excavations from Aidipsos center. Even hosted the Mycenaean sword found near the settlement Kastaniotissa near Istiea, axes and chisels from Mount Kantili