London TW9 3AB
The Royal Botanic Gardens or simply Kew Gardens is a massive collection of gardens and greenhouses in London. It is home to the world's largest collection of living plants. There are many professional laboratories here, but also plenty to see and do for visitors.
There is the Alpine House, the Japanese Gateway, Kew Palace, Minka House, museums and conservatories, and the breath-taking treetop walkway 60 feet above the grounds.