Wimbledon is a district of southwest London, England, in the London Borough of Merton. Wimbledon had a population of 68,187 in 2011. It is home to the Wimbledon Tennis Championships and New Wimbledon Theatre, and contains Wimbledon Common, one of the largest areas of common land in London. Wimbledon has been inhabited since at least the Iron Age when the hill fort on Wimbledon Common is thought to have been constructed. In 1087 when the Domesday Book was compiled, Wimbledon was part of the manor of Mortlake.