beach volley ball
They are Horse Guards.
The cast of Queen and Royalty Arriving at Horse Guards Parade - 1902 includes: Queen Alexandra as herself
I think it was beach volleyball.
15 minutes to walk
Beach Volleyball on Horse Guards Parade in central London
The indoor volleyball competition is taking place at Earls Court Exhibition Centre, in west London, and the beach volleyball tournament is being held at Horse Guards Parade in central London.
Frederick William Speaight has written: 'The Horse guards' parade' 'The work of the Hertfordshire County Council'
Royal Horse Guards was created in 1650.
Horse Guards - building - was created in 1753.
Many officially recognized sports are not included in the Olympic Games. Some examples include rugby, korfball, lacrosse, american football, and horse racing.
Royal Horse Guards - Denmark - was created in 1661.