Persepolis
Darius I built the greatest palace at Persepolis on the western side of platform. This palace was called the "Apadana". The King of Kings used it for official audiences. The work began in 518 BC, and his son, Xerxes I, completed it 30 years later. The palace had a grand hall in the shape of a square, each side long with seventy-two columns, thirteen of which still stand on the enormous platform. Each column is high with a square Taurus (bull) and plinth. The columns carried the weight of the vast and heavy ceiling. The tops of the columns were made from animal sculptures such as two-headed lions, eagles, human beings and cows (cows were symbols of fertility and abundance in ancient Iran). The columns were joined to each other with the help of oak and cedar beams, which were brought from Lebanon. The walls were covered with a layer of mud and stucco to a depth of 5 cm, which was used for bonding, and then covered with the greenish stucco which is found throughout the palaces.
Argilus
Argilus or Argilos () was a city of ancient Macedonia in the district Bisaltia, between Amphipolis and Bromiscus. It was founded by a colony from Andros. It appears from Herodotus to have been a little to the right of the route of the army of Xerxes I took in its invasion of Greece in the Greco-Persian Wars, and must therefore have been situated a little inland. Its territory must have been extended as far as the right bank of the Strymon, since Cerdylium, the mountain immediately opposite Amphipolis, belonged to Argilus. During the Peloponnesian War, the Argilians readily joined the Spartan general Brasidas in his Chalcidian expedition in 424 BCE, on account of their jealousy of the important city of Amphipolis, which the Athenians had founded in their neighbourhood. The treaty establishing the Peace of Nicias, in 421 BCE, respected the neutrality of Argilus, Stageirus, Acanthus, Olynthus, Scolus, and Spartolus.