the prytaneion was a building at olympia, greece. it was here that feasts in honor of the olympic victors and official guests were held in ancient times. the prytaneion was built towards the end of the 6th century bc. it was located northwest of the temple of hera at olympia. during roman times (as evidenced by the many bricks), it was reconstructed and extended many times. the altar of hestia (the greek virgin goddess of the hearth) was in the building. it was on this altar that the olympic eternal flame burned day and night. every year, olympian priests would daub the great altar of zeus with a mixture made from the ashes of the altar of hestia and the water of the river alpheios. the altar of hestia was in a square room on the southern side of the building. the rooms on the west side and the peristyle court on the north side were used for feasting and cooking.