Stoa of Echo
Dating from the 4th century BC, the Stoa of Echo was located at the sanctuary of the Altis, east of the temples of Zeus and Hera. It was probably built under the reign of Philip II and it almost covered the entire east side of the enclosure. The Stoa was 94m. long and had an external colonnade of Doric order. Named Stoa of Echo because of its acoustics, it was also known as "Poikile Stoa" because its walls were decorated with paintings.