We were exploring the Royal Mile and went down this side street to check it out since it looked interesting and seemed to have seen some history. We did not know to what extent until our tour guide brought us back here and told us the history of Edinburgh and that this was one of the original streets. It is super narrow but apparently, all the streets were that way since they had to build up a lot of living space hundreds of years ago...including 14 story buildings to house folks since the walls went up around the city and made it a very constrained space. There was a lot of other history that he shared as well but will leave it to you and Google to sort that out. read more