Ezekiel 41:8-11

The outside wall of these rooms was 2.5 metres thick; there was one door into the rooms on the north side of the Temple, and one into those on the south side. I saw that there was a terrace 2.5 metres wide all round the Temple; it was three metres above the ground and it was level with the foundation of the rooms by the temple walls. Between the terrace and the buildings used by the priests there was an open space ten metres across, along the sides of the Temple.