Visualizing the passage of time with layers

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Ptolemais, Libya

Watercolour and Photoshop™

Originally one of the five cities of the 7^th Century BCE Libyan Pentapolis, Ptolemais was conquered by Alexander the Great in the 4^th Century BCE (and passed to his General, Ptolemy - hence the name), and conquered by Rome in the 1^st Century CE. Ptolemais was the site, in 301 CE, of an early attempt at wage and price controls – Diocletian’s Edictum De Pretiis – overlaid, in this computer painting, on the background of a watercolour of the present day ruins of the site.