Hi Jabbath,Sorry but I missed out an important part of the Auld Reekie story.At the base of the castle rock on the north side there was a loch called the nor loch back in the 17th century.It was actually a giant cesspit used by the locals to dump toilet and domestic waste,even dead bodies which obviously together with the air pollution caused the smell.Eventually as we became more environmentally aware this"loch" was drained and in its place we now have Princes Street gardens.The gardens and Castle rock are bang in the middle of Edinburgh and very popular with tourists.Sorry to go on about it but I completely forgot about the Nor loch.