This monument, at the very top of the theatron of the Theater of Dionysus, was initially erected in 320 BC by Thrasyllos in front of the cave he dedicated to Dionysus. 50 years later, the monument was enlarged by his son, Thrasykles, in celebration of similar choregic victories. The monument was much more elaborate that the surviving parts suggest, and even these Corinthian columns once supported votive tripods. The picture above was taken from the Wall of Cimon, a defensive wall surrounding the acropolis built after the Persian Invasion. That cave once dedicated to Dionysus sported a painting of Apollo and Artemis killing Niobe’s children when Pausanias passed through Athens in the 2nd century AD (1.21.5), and it is now a Christian shrine.