| Kew Gardens Avg. Rating: 0/5 | No horticulturalist will want to miss the Royal Botanic Gardens at Kew, ranked among Londons four World Heritage Sites and a former Royal residence. The gardens grow more than 30,000 different types of plants from all over the world, including banana, coffee, breadfruit and paw-paw plants. Kew Palace has reopened ... |  |