Shrine of Kodros, Neleus and Basile
From Project Athinai
The grave of Kodros, an Athenian king of the 11th century BC slain by Peloponnesian invaders, lay outside the primitive city walls, presumably at the location where he was killed. Later, a shrine dedicated to Kodros, Neleus and Basile was founded near the grave of Kodros. One of the boundary stone of the sanctuary, dating from around 450 BC, has been found.
When the new Themistoklean walls were erected, the entire precinct of the sanctuary was enclosed within the city walls. It was located adjacent to the Itonian Gate. Plato mentions this shrine and calls it the "shrine of Basile".
The shrine lay inside a large precinct planted with more than 200 olive trees.
Travlos, John, Pictorial dictionary of Ancient Athens, Books that matter, New York, 1971, p. 332