Windsor Castle is the largest and oldest occupied castle in the world. William the Conqueror built the first fortress at this location more than 900 years ago. This installation was clearly installed more recently, this photo was sent in in 2002 by an independent contributor
JD sent in this newest photo of a different facility at Windsor Castle in 2008. He adds: "The Castle covers an area of about 5 hectares and contains magnificent State Apartments furnished with treasures from the Royal Collection, St George's Chapel (one of the most beautiful ecclesiastical buildings in England and the burial place of 10 monarchs), and Queen Mary's Dolls House, a masterpiece in miniature. This is the gents within the public entrance block. Sadly, I doubt that any Royal has ever used the facilities."