Kew Gardens

Kew Gardens occupy a whopping 121 hectares and have been on UNESCO's World Heritage List since 2003. The abundant flora and fauna will make you forget that you're in the London metropolis!
Inside the gardens, you'll find an 18th-century Chinese pagoda, ornamental buildings, speciality plant houses, and a breathtaking treetop walkway that runs through the canopy of a forest glade and consists of a 200-metre walkway 18 metres above the ground.
The grounds are also home to Kew Palace, initially bought by George III as a palace for the royal children. Many princes and princesses have been raised here. Later, it was put into use as a summer residence for the British Royals.