Propylaea of Xerxes - Perseopolis
relatively little of the fanciful in our restorations of Persian
buildings, because the rock-cut tombs in the hillside still
reproduce in relief the vanished architecture of the plain below.
Thus while there is no direct evidence that a frieze of lions
in enamelled brick actually ran round the cornice of the Propylaea,
we know that it would certainly not have been out of place.
The lintels, door-posts, and columns were of uncemented stone,
the beams of wood, and the remainder in brick.
From Wonders of the Past