 Aomori Station has been the main station of the city since 1891.The two trunk lines of the Tōhoku region, the Tōhoku Main Line (now the Aoimori Railway) and the Ōu Main Line, terminated at Aomori Station and continued to Hakodate by the Seikan Ferry.In 1988, Seikan Tunnel replaced the ferry's role as the connector of Honshu and Hokkaido's rail networks, but the station still functioned as the connecting point between main line trains and trains for the Aomori-Hakodate section.