Mackenzie & Moncur is an extant construction fabrication firm in Edinburgh. Historically, the firm was an ironworks on Balcarre Street specializing in hothouses or greenhouses that became popular due to the success of Joseph Paxton’s monumental Crystal Palace for the London Exhibition in 1851. (A true marriage of industrial design and architecture.) This cover for the capital of Scotland is adapted from a rectangular cover cast over a century ago. Most of these covers have been rubbed bare by wear and tear. The three-towered castle in the center is in reference to the dominant architecture of Edinburgh’s castle, now only surpassed in magnificence by the parliament building designed by the Catalan architect, Enric Miralles. Both of which are necessary sites to visit in what could be a forthcoming independent nation. But for now, it is part of the UK manhole coaster set too.