The series takes place in the fictional "Eyewitness Museum", a CGI science museum made to replicate, enhance, and expand upon the much-imitated white and empty signature visual style of the books that made them so successful in the first place. Combining fact with fiction, various galleries within the museum are always featured and change constantly with each season and episode and stock footage, which is usually seen through large windows or other depressions in the walls of the museum is also shown regularly. The original book series is known for its striking visual style involving objects specially photographed against a plain white background, and the accompanying TV series brings this to life through video and audio. In addition, almost every episode features a "Hero". The Hero is an animal, character, or object which drives the action of the episode and is continually referred back to throughout. These include the rooster-shaped weathervane from "Weather", Legs the claymation Tyrannosaurus from "Dinosaur", the shape-shifting paper boat from "Pond and River", the hyena from "Monster", the salmon from "Fish", the crab from "Seashore", the cockroach from "Prehistoric Life", the robotic human mime artist from "Human Machine", Smedley the living human skeleton from "Skeleton", Connell from "Dog", and the husky and king penguin from "Arctic and Antarctic".
The original British version of the series was narrated by the late Andrew Sachs for its entire run, while the American dub had Martin Sheen narrating for the first two seasons. However, Sachs took over narrating both versions (with his voice dubbed into American English for that region) for the third and final season. The series producer was Bill Butt for the first season, Briget Sneyd and sometimes Richard Thomson whenever Sneyd had to serve as editor for the second season, and Martin Mortimore for the third season.
In the US, the series aired in primetime on PBS nationwide. When the series was released onto VHS following the original run of each season, the US version of episodes from the first two seasons featured brief behind-the-scenes "making of" clips, each lasting five minutes after the main program, with the UK version having this feature for episodes of the third and final season. In 2003, eight episodes of the series were released onto interactive DVDs that featured interactive links to brief clips from other episodes of the series during the main program. The UK narration was kept in the American releases of these interactive DVDs, which were distributed by the Library Video Company through its Schlessinger Media division. A few years later, continuing well into the early 2010s, a larger number of episodes were released onto DVD in the US. The US narration was included on these releases, as well as the first special as a bonus feature.
There are also four Eyewitness Virtual Reality software titles based on the series: "Cat", "Bird", "Dinosaur Hunter", and "Earth Quest". One of these, "Shark", although seen on the elevator console, was never made.
Eyewitness has also been dubbed into other languages for broadcast internationally, including Spanish, Italian, French, German, Dutch, Russian, Indonesian, and Finnish, among others.
