This isn't that remarkable a photograph but there's something to take note of here. It was taken at Greenwich, a 45 minute cruise along the Thames from central London - that's the Royal Observatory on the extreme mid right. This broad expanse of parkland was the scene of the equestrian events at the 2012 Summer Olympic Games. There had been a good deal of concern with using this cherished public park for an event that detractors felt would leave a permanent blemish. Organizers provided assurances that the park would be left as it was or in better condition than before - clearly they were true to their word.
Canon G1X Mark II image; 1/125 sec at F/11. ISO 100. Minor adjustments in Photoshop.