Originally designed in 1814, with building work completed in 1819, the Regent Bridge spent much of the next two centuries accumulating layers of dirt and soot, creating a dark and unwelcoming entrance to Calton Road.
Created in 2012, Innes' striking light installation transforms the space into a soaring arch of gently alternating colour, reaching almost 20 metres (65 feet) at its tallest point. It's an experience no photo can truly convey - you'll just need to come and see it for yourself!
The Regent Bridge was commissioned by Edinburgh Art Festival and Ingleby. The piece is accessible 24 hours a day and best experienced in darkness.