The remaining Corinthian columns of the 5th century BCE temple of Olympian Zeus, Athens. It was not completed until the reign of the Roman Emperor Hadrian in the 2nd century CE some 638 years after the project had begun.
This image was first published on Flickr.
Original image by Carole Raddato. Uploaded by Carole Raddato, published on 30 April 2014 under the following license: Creative Commons: Attribution-NonCommercial-ShareAlike. This license lets others remix, tweak, and build upon this content non-commercially, as long as they credit the author and license their new creations under the identical terms.