An illustration of the Propylaea or monumental gateway of the Athenian acropolis, 5th century BCE.
Based on Wikipedia content that has been reviewed, edited, and republished.
Original image by Immanuel Gial. Uploaded by Mark Cartwright, published on 19 June 2013 under the following license: Public Domain. This item is in the public domain, and can be used, copied, and modified without any restrictions.