&lsquoBeauty lies in the eyes of the beholder&rsquo goes the famous line and you will find plenty of beauty in the art found in public spaces around the world. But have you been looking down enough to find some spectacular art underfoot Drain, sewer or manhole covers, however you would like to call them, mark the mouths of tunnels, pipes and shafts that run under the belly of cities and towns. While most of these cast iron discs are plain and simple, some are worth crossing lands and seas for a visit



