It was more than interesting back in the 70's when the border to Spain was closed. The approach from the west you could not intrude into Spanish airspace which made for some tight low level turns, then you appeared to be landing short into the sea to hit the piano keys, then the delightful sight of the wing hanging over the edge of the runway with the sea underneath it when the brakes finally pulled you up and you turned to taxi back to the terminal. Dear old Brittania's http://www.google.co.uk/imgres?hl=en&sa=X&biw=1920&bih=955&tbm=isch&prmd=imvns&tbnid=AfG53KPSX3hFhM:&imgrefurl=http://aircraftnews.wordpress.com/category/air-travel/&docid=BUz6UIQOFq5svM&imgurl=http://aircraftnews.files.wordpress.com/2008/08/britannia.jpg&w=500&

The other "interesting" restriction was the huge layers of anchor chain laid down the sides of the runway to act as arrestor gear ballast for the Buccaneers in an emergency.