Did the Hanging Gardens of Babylon or the Egyptian labyrinth, described by Herodotus, really exist- Was Silbury Hill, the largest ancient mound in Europe, purposely built or just fly-tipping of construction spoil from the nearby Avebury stone circle?
Dick Parry takes the reader on a journey from Roman aqueducts and bridges to the Great Wall and Grand Canal of China and onto the Inca road system that extends thousands of kilometres through the Andes.
The magnificent structures described in Engineering the Ancient World, published last month, are impressive even by today's standards.
We have five hardback copies, supplied by Sutton Publishing, to give away to the first five correct entries drawn from GE's Wellington boot on 2 December.
Q. What modern day location is thought to be the site of the legendary Hanging Gardens of Babylon?
Please send your answers to damon. schunmann@emap. com The deputy editor's decision will be final.
Engineering the Ancient World, by Dick Parry, is published by Sutton Publishing, £20.