Hidden Valley opened in 1994, with a garden shed in the field, with a Scavenger trail and a small display of chocolate bars for sale, a small woodland play area soon saw a tea room and array of tin sheds, garden railway, cottage, telephone box and walk in mine tunnel. A few years later saw the introduction of the Vault and a miniature railway taking guests around the park. The theme of treasure hunts and detective trails has continued throughout. 2013 saw the opening of the new visitor centre and Forbidden Mansion with further enhancements; gardens, maze and railway tunnel in the latter years. 2019 our 25th year sees the opening of Tibbohton.

Take a train ride around the park on the Porterswick Junction Light Railway, with its bridges, cuttings and a snaking tunnel and visit our restaurant serving delicious meals, cream teas and mouth-watering cakes. A great range of gifts and curiosities can be found in our gift shop.