The Gate of All Nations or Gate of Xerxes is the construction that was ordered by the Achaemenid king Xerxes (486-465), the successor of the founder of Persepolis, Darius I the Great.
It consisted of a grand hall that was a square of approximately 25 metres (82 ft) in length, with four columns and its entrance on the Western Wall.
A pair of massive bulls with the head of a bearded man secured the western entrance. Two Lamassu in the Assyrian style, with wings and a Persian head (Gopät-Shäh) and of colossal proportions, stood at the eastern doorway.

Persepolis was founded by Darius I in 518 BC and was the ceremonial capital of the Achaemenid Empire. It was built on an immense half-artificial, half-natural terrace, where the King of Kings created an impressive palace complex inspired by Mesopotamian models.