During the design of Café Corner (and presumably with the other sets in the series), the designer had to work closely with the building instructions team due to some of the "unorthodox techniques" that he used "which have not been tried before in official Lego sets."[REF] .
The reason interiors were not included in the first two models in the series, Café Corner and Market Street, was because they could not be seen in the pictures included on the packaging.