Moji Telecommunications Museum

Built in 1924 as a telephone exchange station, this Taishō Modern building with its trefoil arches and columns became a telecommunications museum in 1994. The first floor traces phone technology from Alexander Graham Bell's 1876 original through rotary dials, car phones, and early smartphones, with interactive exhibits including a Morse code transmitter and a replica telephone operator's station. The building was designated a Heritage of Industrial Modernization site in 2009. On the second floor, a type-H automatic switchboard first installed in Yokohama in 1926 remains operational and can be viewed by appointment.