The beach volleyball venue is taking up some prime London real estate: Horse Guards Parade, which is basically in the prime minister's front yard and not far from Buckingham Palace and Parliament, too.

So, what are the Horse Guards doing while their usual home is covered with sand? They're running through their usual routine across the street.

In a lesser-known changing of the guard, a group of blue-coated riders, some of them with shiny armor vests, sit facing another set wearing red. After measuring each other up for a few minutes, one officer barks out commands, they sheath their swords and ride off single file.

A friendly bobby explained that the different colors represent different regiments.

—Jimmy Golen — Twitter http://twitter.com/jgolen

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