One moment.
Finding a story worth your time.
A TMDB recommendation
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Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
The world, in frames.
Stills, posters, and artwork in every language.
Your next obsession.
Finding your next story…
Season after season.
Choose a season and explore every episode.
Specials
111 episodes1966-12-251
1964
9 episodes1964-02-042
1965
24 episodes1965-01-063
1966
23 episodes1966-01-024
1967
23 episodes1967-01-175
1968
24 episodes1968-01-026
1969
37 episodes1969-01-027
1970
37 episodes1970-01-058
1971
32 episodes1971-01-049
1972
33 episodes1972-01-0310
1973
32 episodes1973-01-0411
1974
33 episodes1974-01-0712
1975
26 episodesBehind the frames.
Created by—
Original languageEnglish
Original release1964-02-04
ProductionUnited Kingdom
Where to watch
Free
See viewing options on TMDBAvailability data by JustWatch. Check the provider for current access.PBS
