Clearly not for the height-averse — they can explore the new underground Rhizotron, which shows off root systems — the Xtrata Treetop Walkway gives visitors new views of the gardens and west London from a sinewy path set up between oak, sweet chestnut and lime trees.
The metal structure, designed by the same architects who brought us our city's other height site, the London Eye, will help Kew ring in its summer festival celebrating trees from May 24 to September 28.
There are also other attractions for budding arborists, including displays on biodiversity and photography, and a special "Tree Listening Installation," which allows you to hear the sounds of water being pulled from roots to leaves and how the tree reacts to wind.
If this isn't enough to turn you into a treehugger for at least one day, we don't know what is.
Photo copyright James Morley