Kew Gardens The Royal Botanic Gardens, Kew, usually referred to simply as Kew Gardens, are extensive gardens and botanical glasshouses between Richmond and Kew in southwest London, England. Located in 300 acres of beautiful landscape Kew Gardens sits beside the river Thames. The Director of the Royal Botanic Gardens, Kew, is responsible for the world’s largest collection of living plants. The organisation employs more than 650 scientists and other staff. The living collections include more than 30,000 different kinds of plants, ...