The Hertfordshire garden centre with a miniature railwayVanstone Park Garden Centre shares that its commitment to quality and community is at the heart of everything, according to its website. The miniature railway is one of the garden centre's most popular features, offering s a charming journey through the woodland. What do guests say about Vanstone Park Garden Centre? Another shopper wrote, "Lovely garden centre for both shopping and a day out. Have you visited Vanstone Park Garden Centre?