The Antikythera Mechanism, so named after the Greek island in whose waters it was salvaged in 1901 from a shipwreck datable to ca. 70–60 BCE, is a remarkable geared device that was constructed in the 2nd or 1st century BCE to calculate and display various astronomical, calendrical and athletic time periods. No device of comparable technological complexity is known until 1,000 years later. In 2005, a group of researchers known as the Antikythera Mechanism Research Project (AMRP) examined the 82 fragments of this badly corroded and brittle device with two modern technologies called Micro-Focus X-Ray Computed Tomography (CT) and Polynomial Texture Mapping (PTM, now more widely known as Reflectance Transformation Imaging or RTI). These technologies helped to unlock more secrets of this remarkable device. This talk by Paul Iversen (Case Western Reserve University, Ohio) will give a general overview of the discovery of the mechanism and the history of the scholarship on it. He explains the functions of the Antikythera Mechanism using the example of a replica that will be on site. An event of the BBAW project "Inscriptiones Graecae" in conjunction with the Einstein Centre Chronoi. With an introduction by Sebastian Prignitz ("Inscriptiones Graecae").