Philon ( el, Φίλων), Athenian architect of the 4th century BC, is known as the planner of two important works: the

portico A portico is a porch leading to the entrance of a building, or extended as a colonnade, with a roof structure over a walkway, supported by columns or enclosed by walls. This idea was widely used in ancient Greece and has influenced many cult ...

of twelve Doric columns to the great Hall of the Mysteries at

Eleusis Elefsina ( el, Ελευσίνα ''Elefsina''), or Eleusis (; Ancient Greek: ''Eleusis'') is a suburban city and Communities and Municipalities of Greece, municipality in the West Attica regional unit of Greece. It is situated about northwest ...

(work commissioned by Demetrius Phalereus about 318 BC) and, under the administration of Lycurgus, an

arsenal An arsenal is a place where arms and ammunition are made, maintained and repaired, stored, or issued, in any combination, whether privately or publicly owned. Arsenal and armoury (British English) or armory (American English) are mostly ...

at Athens. Of the last we have exact knowledge from an inscription. E. A. Gardner observes that it "is perhaps known to us more in detail than any other lost monument of antiquity." cites It was to hold the rigging of the

galley A galley is a type of ship that is propelled mainly by oars. The galley is characterized by its long, slender hull, shallow draft, and low freeboard (clearance between sea and gunwale). Virtually all types of galleys had sails that could be used ...

s; and was so contrived that all its contents were visible from a central hall, and so liable to the inspection of the

Athenian democracy Athenian democracy developed around the 6th century BC in the Greek city-state (known as a polis) of Athens, comprising the city of Athens and the surrounding territory of Attica. Although Athens is the most famous ancient Greek democratic city- ...

. He is known to have written books on the Athenian arsenal and on the proportions of temple buildings, but these are now lost. Vitruvius (vii, introduction) quotes Philon on the proportions of temples, and on the naval arsenal which was at the port of Piraeus. Philon's arsenal was destroyed by the forces of Lucius Cornelius Sulla in the Roman conquest of Athens in 86 BC.

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* ;Attribution * Ancient Greek architects Ancient Greek mathematicians 4th-century BC Athenians 4th-century BC writers 4th-century BC mathematicians {{greece-mathematician-stub