The Water Polo Arena is a venue of the 2012 Summer Olympics to be held in London, England, from 27 July to 12 August 2012. It is situated in the south-east corner of the Olympic Park, alongside the Aquatics Centre, and opposite the Olympic Stadium on the opposite bank of the Waterworks River. Construction on the temporary structure began in spring 2011. During the Olympics, the 5,000-seat arena will host both the men's and women's water-polo competitions, and will contain both a warm-up pool and a 37-metre competition pool. The Aquatics Centre and Water Polo Arena are adjacent to each other in one of the most compact areas of the park. To make the best use of the space available, some back-of-house facilities, such as space for broadcasters, catering and security will be shared between the two venues. The first dedicated water-polo venue to be built for an Olympics, the structure will be taken down after the games. Elements of the venue are expected to be reused or relocated elsewhere.