Mentioned by st-christophers.co.uk
11 Best Museums in Edinburgh 2021 | St Christopher’s Inns
"Getting to Camera Obscura : Located on Castlehill, the museum is a 6 minute walk from St Christopher’s Inns Edinburgh. Photo credit: Camera Obscura & World of Illusions, Edinburgh. Right at the top of the Royal Mile, just a few seconds walk from Edinburgh Castle, is the most fun, interactive museum on this list."