Near Dimitsana there are remains of cyclopean walls, an acropolis, and buildings from the classical era, which could be from the ancient city of Teuthis. The town reached its zenith in the Middle Ages, mentioned in Patriarchal documents in 963.
On a small hill near the village of Nestani or Tsipiana there are remains of the Acropolis of Nostia (also Nostea or Nestani). The settlement was part of Ancient Mantineia in the 5th century BC. There are Pelasgian walls and parts of a wall tower, the only evidence of many towers that were part of the wall.
There are some ruins of Methydrion Here, including a temple dedicated to Poseidon Hypios. Not far off, the village of Valtetsiniko is said to be where Ancient Lousoi once stood.
Just 10 km from Tripoli in the plain of Milia lie the remains of Ancient Mantineia (or Mantinea) and its acropolis. There are traces of temples, a theatre, an agora and other buildings. A strange doorless sanctuary dedicated to Poseidon also existed here.
Overlooking the plain of Megalopolis, Lykosoura is a very ancient holy city with remains from temples dedicated to Despoina, Demeter and the Great Mother, one dating from the 4th century BC.
Near the village of Piana where the waters of the Elisson or Davia River run, there are remains of the ancient city of Dipaea. There's also a medieval castle.
This may be the site of Ancient Brasiae or Brasias with remains of a very ancient acropolis lying on the hill above Agios Andreas, with ruins from Palasgian times. Graves from different periods are also present.
At the beginning of the plain of Asea in today's Sapolivado (Sapiko in Byzantine times) there are remains of the area's old acropolis.
Prehistoric Orchomenos was founded at the foot of the Acropolis and later during historic times moved up to the mountain where its most important monuments (Agora, Theatre, etc) are also situated. The plain shows prehistoric drainage infrastructure, a prehistoric tumulus bridge, and a prehistoric settlement at the Katalymata site. The modern site shows evidence of an agora, bouleuterion, walls, and hekatompedon temple of Mesopolitidos Artemis. At the Mytikas site there are remains of a Mycenaean settlement and ancient sanctuary of Palaiopyrgos. There's also an ancient sanctuary – followed by an early Christian Basilica – between Orchomenos and Palaiopyrgos in Mantinea.
