As a member of the Scottish Clarinet Choir, I recently played in an hour long concert in St Giles Cathedral, Edinburgh. I had never been inside the cathedral before, despite visiting Edinburgh many times. The concert is part of an initiative by the cathedral to put on free concerts every Sunday evening at 6pm. There are also frequent afternoon concerts during the week. The cathedral is on the Royal Mile just down from the castle and would be on the route taken by most tourists and visitors to the city. I just thought I'd mention it here in case these sorts of free events are of interest. A diary of events can be found here If nothing else events such as this would offer the opportunity to rest ones weary feet for an hour.