BIAL's first headquarters were established in Porto, on what was then Rua de Heróis de Chaves (today Rua D. João IV), on the corner of Rua Fernandes Tomás. And from there it developed, moving in the early thirties to number 87 Travessa de Santa Catarina, then Rua João Oliveira Ramos, where it remained until the end of the sixties.