Lee Valley White Water Centre is a white-water slalom centre, that was constructed to host the canoe slalom events of the London 2012 Olympic Games. On 9 December 2010, Anne, Princess Royal officially opened the venue which is owned and managed by Lee Valley Regional Park Authority. The £31 million project to construct the centre finished on schedule and was the first newly constructed Olympic venue to be completed.
The Olympic canoe slalom competition was held from 29 July through 2 August. The venue also hosted the 2015 ICF Canoe Slalom World Championships.
Wikipedia https://en.wikipedia.org/wiki/Lee_Valley_White_Water_Centre
Coordinates 51°41'16.653" N -0°0'59.726" E