This is a canon - as you can read, it is a little over 200 years old - in the Akerhus Festning. Apart from it being a nice place to be on a nice day, I was also looking for a Geocache which was close to this canon.

I was tempted to blip a shot of the Royal Yacht, but had been pipped to the post on a better evening by Bonanza. Mine is here, in case you are interested.