Bangor station was opened by the Chester and Holyhead Railway

in 1848 located in a strategic location between two fingers of highland that lead to the coast. The railway route into the station area passes through tunnels at both the eastern and western end. The slightly later 'Big Four' identity of the station is clearly seen in the booking office with a trio of fine LMS roundels installed above the ticket office. These would probably have been istalled pretty soon after grouping took place in 1923.