Royal Society of Edinburgh (RSE)
The tour is also available to download as a PDF document.
While on the walk you can visit the exhibition at the RSE on George Street (Location 8): "From Maxwell to Higgs". They also have a large-scale holograph of Maxwell's statue in the James Clerk Maxwell Room (visits welcome but subject to availability).
A different, fun interactive version of the walk is downloadable onto your mobile phone or tab as a free 'app' courtesy of Global Treasure Apps