The choregic monument of Thrasyllos. It was erected by Thrasyllos in 320/19 B.C., high on the south slope of the Acropolis, at the "katatome", the great artificial scarp of the rock which had been evened out vertically during the construction of the Dionysos Theatre. Carvings on the rock visible in the same area point to the conclusion that several more choregic monuments were erected, but no trace of them has been preserved.