In 1965 the Kubricks bought Abbots Mead on Barnet Lane, just south-west of the Elstree/Borehamwood studio complex in England. Kubrick worked almost exclusively from this home for 14 years where, with some exceptions, he researched, invented special effects techniques, designed ultra-low light lenses for specially modified cameras, pre-produced, edited, post-produced, advertised, distributed and carefully managed all aspects of four of his films. In 1978, Kubrick moved into Childwickbury Manor in Hertfordshire, a mainly 18th-century stately home, which was once owned by a wealthy racehorse owner, about north of London and a 10-minute drive from his previous home at Abbotts Mead. His new home became a workplace for Kubrick and his wife, "a perfect family factory" as Christiane called it, and Kubrick converted the stables into extra production rooms besides ones within the home that he used for editing and storage.