The Agora (or market place) of Ephesos was first built in the 3rd century BC but was adapted over the Roman period to reach its final form in the early 3rd century AD. On a square plan (111m x 111m) the Agora was accessible through three separate gates and surrounded on three sides by storerooms. Originally, in the centre was a fountain and large number of statues of philosophers and administrators. Visible today are the columns of the Stoa of Nero, 1st century AD. In the left background is the facade of the Celsus library.