<P> Three's Company was recorded at two locations: the first, seventh, and eighth seasons were taped at Metromedia Square and ABC Television Center, while the second through sixth season were taped in Studio 31 at CBS Television City . The cast would get the script on Monday, rehearse from Tuesday to Thursday, and shoot on Friday . Each episode was shot twice in a row using two different audiences . Three cameras were used . </P> <P> The taping was done in sequence and there were rarely any retakes because the producers were strict . Priscilla Barnes once said, "Our bosses were very, very controlling . If my hair was too blonde, I'd get called up in the office ." </P> <P> The scenes in the opening credits where the trio are frolicking on a boardwalk and riding bumper - cars was shot at the Santa Monica Pier, prior to the building of a larger amusement park adjacent to the pier . A later opening sequence that was shot when Priscilla Barnes joined the show featured the new threesome and the other cast members riding a zoo tram and looking at various animals around the zoo . Those sequences were filmed at the Los Angeles Zoo in Griffith Park . During the opening credits, the little baby boy in overalls who walks up to Janet while feeding the goats at the zoo, is Jason Ritter, John Ritter's elder son . The exterior shots of the apartment building were filmed at 2912 4th Street in Santa Monica . </P> <P> Three's Company had many cast changes over its run . The first of these changes took place in the spring of 1979 with the relocation of the Ropers to their own television series (The Ropers), which revolved around Helen and Stanley, and their neighbors in a townhouse community after Stanley had sold the apartment building . Man About The House had similarly spun the Ropers off for the series George and Mildred . </P>

Where was the opening of three's company filmed