Over the years, I’ve seen a fair number of cities bathed in light, transformed by vibrantly-coloured installations. I remember travelling up to Blackpool for The Illuminations as a child, lights snaking for miles along the front. Years later, I stood in Millennium Square, alone, mesmerised by Light Night Leeds. Since then I’ve seen light shows in Bern, Lyon, London and, now, Cambridge. I didn’t expect much from e-Luminate, but I was quickly surprised by just how good a show my current hometown put on.