From the article:
Often referred to as “the first bill of human rights” because its inscription encourages freedom of worship throughout the Persian Empire, it is a small clay object — not quite nine inches long — bearing an account, in Babylonian cuneiform, by Cyrus, the King of Persia of his conquest of Babylon in 539 B.C. The cylinder was found in what was once Babylon, now Iraq, in 1879 during a British Museum excavation and has been on display at the museum ever since. It is one of the most famous objects to have survived from the ancient world.
Read the full New York Times article on the Cyrus Cylinder Tour.