What it is
The Cyrus Cylinder is a barrel-shaped clay cylinder, about twenty-three centimetres long, inscribed in Akkadian (Babylonian) cuneiform and buried in the foundations of a building in Babylon after Cyrus the Great captured the city in 539 BCE. It was excavated in 1879 and is now in the British Museum. It is the single most famous object surviving from the reign of Cyrus, and the founding text of the Achaemenid imperial self-presentation.
Historical context
Cyrus took Babylon from its last Neo-Babylonian king, Nabonidus, whose religious reforms had alienated the powerful priesthood of the city-god Marduk. The cylinder belongs to a long-established Mesopotamian genre — the royal foundation deposit, in which an incoming king justifies his rule and records his pious works. Its form is conventional; what it records is the Persian conqueror presenting himself, in the local idiom, as the legitimate restorer of an order that Nabonidus had disturbed.
What it argues — or purposes
The text has Marduk himself choose Cyrus, take him by the hand, and deliver Babylon to him without a battle; Cyrus in turn restores the city's cults, returns displaced gods and peoples to their proper homes, and rules in justice. The platform reads it under kingship and legitimacy: it is a working statement of how the Achaemenid king grounded his authority over a conquered people — not as a foreign master imposing his own order, but as the agent of the local divine order, restoring what a bad predecessor had broken. This is the Persian imperial method in miniature, the same logic the biblical tradition records when Cyrus authorises the return of the Judaean exiles and the rebuilding of the Temple (Ezra 1; Isaiah 45).
Reception and influence — with a necessary caution
The cylinder has the most distorted modern reception of any object the platform reads. In 1971 the Pahlavi monarchy of Iran promoted it as "the first charter of human rights," and a replica was presented to the United Nations; that reading has circulated widely ever since. The platform records plainly that this is anachronism. The cylinder is a conventional Mesopotamian royal inscription concerned with the legitimacy of one king's rule and the restoration of cults and deported populations to their cities; it contains no general statement of universal rights, and reading it as a "human rights charter" imposes a modern category it cannot bear. Its real significance — the Achaemenid policy of governing through restoration and religious tolerance — is remarkable enough without the myth.
Source discipline
The cylinder is a primary Achaemenid-commissioned source, and like all royal inscriptions it is partisan: it is the conqueror's own account, written to legitimate him to the conquered. It should be read against the Babylonian Chronicle and the other Mesopotamian sources rather than taken at its word. Cite by line of the standard British Museum edition; Finkel's edition is the authority. See our Sources page.