Spread across 300 acres, these gorgeous gardens are a year-round wonderland of sights, scents, and beauty. Horticultural specimens from around the world can be found either on the grounds or in a number of climate-controlled greenhouses. You'll also find lakes, pathways, and other eye-catching landscape features, including a Chinese pagoda. Tropical to arctic-adapted plants mesmerize visitors, who get a broad overview of the entire complex at the visitors center. A gift shop is available as well where you can not only buy beautiful plants, plant pots and tea towels but also books about horticulture and its history. This is also where many of Britain's top gardeners trained. TUBE: District line, Richmond overground train