The Asea valley is located between the ancient cities of Tegea and Megalopolis in the central Peloponnese. The city of Asea itself, an independent polis between the 6th and 3rd century BC, was located on and around the conspicuous Paleokastro hill at the heart of the valley. The location of the valley is important as it acted as a “main” thoroughfare between Corinthia and the Argolid in the east, and Olympia in the west, during prehistoric and ancient times. Due to few mentions in ancient literature, Asea is mainly known through the archaeological evidence.
Asea is located in the heart of the Peloponnese. The Asea valley was inhabited, first in the Middle/Upper Paleolithic period (ca. 40.000 B.P) by people making their living from hunting and fishing. During most of the Neolithic period and the Bronze Age there were several villages in the valley, of which the most important one was located on the Asea Paleokastro hill.