The Time & Temperature Building (official name 477 Congress Street) is a fourteen story office building located on Congress Street in downtown Portland, Maine. The building is named after the large display screen on the roof that flashes the local time and temperature. Originally known as the Chapman Building, it was erected in 1924 as a twelve-story building. Together with the ten story Fidelity Trust Tower next door, these buildings were for many years two of Portland's tallest.
When it first opened, the Chapman Building once had the state's first indoor shopping center on its ground floor. A few shops still operate inside. In 1964, two additional floors were built, with the flashing time and temperature sign installed on the roof. At the time, Casco Bank & Trust was the main tenant of the building, so in addition to the time and temperature, the words "CASCO" and "BANK" also flashed. An updated sign was installed in 1999.