Close to Richmond Park is Kew Gardens which has the world's largest collection of living plants. In 2003, the gardens were put on the UNESCO list of World Heritage Sites. There are also parks administered by London's borough Councils, including Victoria Park in the East End and Battersea Park in the centre. Some more informal, semi-natural open spaces also exist, including the Hampstead Heath of North London, and Epping Forest, which covers 2,476 hectares (6,118 acres) in the east. Both are controlled by the City of London Corporation. Hampstead Heath incorporates Kenwood House, a former stately home and a popular location in the summer months when classical musical concerts are held by the lake, attracting thousands of people every weekend to enjoy the music, scenery and fireworks.