The film stars Kerwin Mathews as the title character, June Thorburn as his fiancée Elizabeth, and child actress Sherry Alberoni as Glumdalclitch.

Filmed in England and Spain, The 3 Worlds of Gulliver was directed by Jack Sher and featured stop-motion animation and special visual effects by Ray Harryhausen.

The cast includes Martin Benson as Flimnap, Lee Patterson as Reldresal, Jo Morrow as Gwendolyn, Mary Ellis as the Queen of Brobdingnag, Marian Spencer as the Empress of Lilliput, Peter Bull as Lord Bermogg and Alec Mango as the Minister of Lilliput.

In 1699, Dr Lemuel Gulliver is an impoverished surgeon who seeks riches and adventure as a ship's doctor on a voyage around the world.

The Lilliputians are afraid of Gulliver and tie him down with stakes to the beach, but he eases their fears by performing several acts of kindness.

Lilliput's emperor then views the giant as a threat to his throne after Gulliver is critical of the reasons for the war (a debate about which end of an egg to cut).

The king orders him burned, but Glumdalclitch saves Gulliver and Elizabeth from the pursuing Brobdingnagians by placing them in her sewing basket and tossing it into a brook that flows out to the sea.

Gulliver, now happy to settle down with Elizabeth, replies that the bad qualities of Lilliput's pettiness and Brobdingnag's ignorance are inside everyone.

He and producer Elliot Lewis pitched a fantasy film to NBC that would combine two Gulliver's Travels stories, "Lilliput" and "Brobdingdang."

[2] In October 1958, it was announced that Schneer, who called the project "the most complicated picture ever attempted," would produce Gulliver's Travels, to be directed by Jack Sher.

[8] Schenner later said: Sher wanted to make a name for himself as a director but he didn't have sufficient experience to direct the picture.

In The New York Times of December 17, 1960, Eugene Archer praised the film's technical achievement in stop-motion animation and enthusiastically recommended it for children but noted: "While the adults will find it all too mechanical to really capture the imagination, and may resent the unclear ending that seems certain to provoke some youthful queries, they should be grateful for a children's film that treats a classic without condescension or burlesque.