Across from the Panagia Katakekrymmeni, lies a round, wide hill that is about 80 metres high, reaching the Charadros River. Once upon a time this hill featured an acropolis with towers, the remains of which can still be seen. The acropolis on Aspis may even be older than that of the nearby Larissa (not to be confused with the city of the same name in central Greece). Visitors to Aspis may see an underground route that is about 20 metres long, which might be a cistern or a basement mentioned in the writings of Pausanias in connection to Danae and the oppressor of ancient Argos, Perilaos.