Edinburgh is a very photogenic city that offers visitors several prime locales to snap a picture. One such visage is located along the Royal Mile, in an area known to locales as the Canongate. The Tolbooth Tavern is situated in an impressive stone building with an ornate clock tower. But what many tourists may be unaware of is that this building hides a dark and mysterious past. Originally constructed in 1591, the building that contains The Tolbooth Tavern was used to collect tolls from travelers who wished to enter the…