Interiors were filmed at
Netley Hospital, a mid-19th-century building that was demolished not long after the film was made. Also known as the Royal Victoria Military Hospital, Netley Hospital was the world's longest building at the time it was completed. Beach scenes with the Gryphon and the Mock Turtle were filmed at
Pett Level in East Sussex. The courtroom scene was recorded at the BBC's
Ealing Studios and involved the building of the largest set that Stage 2 at Ealing had ever seen. In July 1966, the BBC spent three days at
Donington Hall filming the "Pool of Tears" and the "Caucus Race" scenes for
Jonathan Miller's production. The "Caucus Race" was filmed in the cellars. ==References==