The corridor leading to Colin Craven's (Heydon Prowse's) room and the interior of the room are decorated with tapestries depicting Edward VI, a sickly boy King who died young at the age of 16.
The biggest challenge for Production Designer Stuart Craig was the garden. The garden was built from scratch to avoid the logistical nightmare of crowd control that would have been required for a complicated summer and winter shoot in an existing garden.
Portions of several structures were used to depict Misselthwaite Manor. The exterior is primarily 16th-century Fountains Hall in Yorkshire and some of Allerton House in Yorkshire. The kitchen set was built in a classroom at Eton College. Lord Archibald Craven's (John Lynch's) study is at Harrow School. The main staircase was in St. Pancras Chambers, adjoining the busy St. Pancras Station in Central London. The bedroom interiors were shot on sets on "A" stage at Pinewood Studios. The grounds were shot in Allerton Park in North Yorkshire and some of Luton Hoo in Hertfordshire, as well as Pinewood Studios in Buckinghamshire. The topiary arch used for the Misselthwaite garden leads directly onto Conistone Moor in North Yorkshire. Interiors of the former Midland Grand Hotel in London were used for filming as well, notably the scenes on the grand staircase.
The tapestries in Mary's (Kate Maberly's) room comprise a cycle called "The Hunt for the Unicorn." In this cycle, the unicorn is lured from the wild into a new life by a young virgin, foreshadowing Mary's role in the story.
The story Mary Lennox (Kate Maberly) mentions to Colin Craven (Heydon Prowse) while they are putting a puzzle together is that of Krishna, a Hindu god.