A district in Richmond-upon-Thames, Kew is also home to the Royal Botanic Gardens, which is now a World Heritage Site. This estate includes Kew Palace, and houses important historical documents such as the Domesday Book, held at the National Archives. It is said that Julius Caesar himself may have forded the Thames at Kew in 54 BC, during the Gallic Wars. But of course, the Botanic Gardens are definitely why most people visit this part of London. You can discover the world of science with over 50,000 living plants to be found across this UNESCO World Heritage Site. And, you'll be able to discover rare and threatened plants, learn about edible science, and discover the vast collection of over 14,000 trees in the Arboretum. Kew also frequently hosts musical and theatrical events throughout the calendar year.