[5.15.2] The Leonidaeum is outside the sacred enclosure, but at the processional entrance to the Altis, which is the only way open to those who take part in the processions. It was dedicated by Leonidas, a native, but in my time the Roman governors of Greece used it as their lodging. Between the processional entrance and the Leonidaeum is a street, for the Eleans call streets what the Athenians call lanes.
Explains the Leonidaeum