Heritage Open Day: The Old Bank - Open for the first time to the public in this century! Visit the Old Bank on Bournville Lane, opposite the Cadbury Factory. Once the Lodge to the historic Bournbrook Hall, and previously converted into a Bank, the building is now the home of APEC Architects Ltd. who welcome you to come and look around and visit their exhibition exploring the history of the building and the public health motives that went into the planning of the Cadbury estate.