Kermanshah’s star attraction is Taq-E Bostan where several large Sassanian bas reliefs are carved into a cliff face that forms the northern city boundary. They depict rulers from the fourth century, and represent some of the best examples of Persian sculpture from the Sassanid period. A short drive away lies Bisotun, where a massive Achaemenian bas relief dating to about 515BC is carved into the precipitous rock face some sixty meters above the plain. An inscription in Elamite, Babylonian and Old Persian enabled nineteenth century linguists to decipher the three cuneiform scripts for the first time – making this site as important for Assyrian cuneiform as the Rosetta stone was for Egyptian hieroglyphs.