“The exquisite set of Raphael tapestries currently on display in the grand gallery of Madrid’s royal palace has survived five tumultuous centuries of wars, rebellions, bombs, bullets and fire – only to find itself menaced by the more quotidian threat of opportunistic pigeons and their droppings. … The [summertime] need to ventilate the gallery, which gives on to the palace grounds, means opening the windows to both fresh air and pigeons.” – The Guardian