The Panionion [27.1167,37.6833] (Perseus) Panionion is a sacred ground in Mykale [26.8667,38.1] (Perseus)Mykale, facing north; it was set apart for Poseidon of Helicon by the joint will of the Ionians. Mykale [26.8667,38.1] (Perseus)Mykale is a western promontory of the mainland opposite Nisos Samos [26.8,37.75] (island), Samos, Aegean Islands, Greece, Europe Samos; the Ionians used to assemble there from their cities and keep the festival to which they gave the name of Panionia.

Not only the Ionian festivals, but all those of all the Greeks alike, end in the same letter, just as do the names of the Persians.