If you have a head for heights (and strong legs!) then one of the highlights of Kew Gardens is the Xstrata Treetop Walkway, which gives you a tree’s eye view of the world.
It’s quite a climb up to the top, but you get some lovely views once you’re up there.
As well as seeing the treetops, you get views of London on the horizon, or closer to home you can get a bird’s eye view of Kew’s Temperate House:
The walls of the walkway are used to display various plant-themed artworks, which range from the more poetic…
…to the strictly scientific: