the outer gatehouse remains - the inner gatehouse was demolished in the 18th century. It is a Grade I listed building. The gardens The surrounding park was previously a fenced deer park, with the castle serving as a hunting lodge. The grounds are located on the River Darent and hidden within it are Queen Anne's bathhouse and an icehouse dating from the 18th century. Most of the grounds of the former estate now constitute Lullingstone Country Park and are Grade II listed. The park contains some of the oldest oak trees in Britain, wildflowers, a church (St Botolph's) of Norman and possibly earlier foundation but much later restoration and rebuilding, and a walled garden, and at one time Lullingstone Roman Villa. Zoe Dyke created the Lullingstone Silk Farm here which was visited by Queen Mary and as a result it created silk for the coronation robe of King George VI. The farm has since moved away but has produced silk for other important Royal events including the Wedding dress of Princess Elizabeth and the Wedding dress of Lady Diana Spencer. The walled garden, previously a herb garden designed by Eleanour Sinclair Rohde, has recently been converted into the World Garden of Plants by the Castle's current owner (and 20th generation of the Hart Dykes), plant hunter Tom Hart Dyke. That conversion was the subject of the BBC2 series Save Lullingstone Castle. Tom Hart Dyke and the World Garden were again featured in Spring 2007 on the BBC2 series, Return to Lullingstone Castle. The garden and the castle are open to the public from April through to September. Gallery Notes External links Country houses in Kent Gardens in Kent Buildings and structures in Sevenoaks District Grade II* listed buildings in Kent Historic house museums in Kent