around 520 BC. Around 570 BC, the city came under the control of Phalaris, a semi-legendary figure, who was remembered as the archetypal tyrant, said to have killed his enemies by burning them alive inside a bronze bull. In the ancient literary sources, he is linked with the military campaigns of territorial expansion, but this is probably anachronistic. He ruled until around 550 BC. The political history of Acragas in the second half of the sixth century is unknown, except for the names of two leaders, Alcamenes and Alcander. Acragas also expanded westwards over the course of the sixth century BC, leading to a rivalry with Selinus, the next Greek city to the west. The Selinuntines founded the city of Heraclea Minoa at the mouth of the Platani river, halfway between the two settlements, in the mid-sixth century BC, but the Acragantines conquered it around 500 BC. Emmenid period Theron, a member of the Emmenid family, made himself tyrant of Acragas around 488 BC. He formed an alliance with Gelon, tyrant of Gela and Syracuse. Around 483 BC, Theron invaded and conquered Himera, Acragas’ neighbour to the north. The tyrant of Himera, Terillus joined his son-in-law, Anaxilas of Rhegium, and the Selinuntines in calling on the Carthaginians to come and restore Terillus to power. The Carthaginians did invade in 480 BC, the first of the Greco-Punic Wars, but they were defeated by the combined forces of Theron and Gelon at the Battle of Himera. As a result, Acragas was affirmed in its control of the central portion of Sicily, an area of around 3,500 km2. A number of enormous construction projects were carried out in the Valle dei Templi at this time, including the Temple of Olympian Zeus, which was one of the largest Greek temples ever built, and the construction of a massive Kolymbethra reservoir. According to Diodorus Siculus, they were built in commemoration of the Battle of Himera, using the prisoners captured in the war as slave labour. Archaeological evidence indicates that the boom in monumental construction actually began before the battle, but continued in the period after it. A major reconstruction of the city walls on a monumental scale also took place in this period. Theron sent teams to compete in the Olympic games and other Panhellenic competitions in mainland Greece. Several poems by Pindar and Simonides commemorated victories by Theron and other Acragantines, which provide insights