Kew Gardens is home to the largest and most diverse botanical collection in the world and was declared a UNESCO World Heritage Site in 2003. Its 121 hectares and 6 greenhouses house over 30,000 species of plants from all across the world. Curious children can discover trees, flowers and bushes they’ve never seen before. They can also play and learn in the kids’ area, designed for children between 2 and 12 and created using the elements that plants need in order to grow: earth, air, sun and water.