England Telephone and Telegraph Building is a historic structure built in 1947 at 185 Franklin Street. It is a Pending Boston Landmark. A developer purchased the building in 2011 and renamed it "50 Post Office Square." In this building, the laboratory in which the first telephone was built has been reconstructed. Langham Hotel Boston, a building that until 1977 housed the Federal Reserve Bank of Boston In 1978 it was designated a Boston Landmark. One Post Office Square 100 Federal Street Ten Post Office Square (Atlantic National Bank Building) built 1924, a pending Boston Landmark, petition accepted for further study in 2000. Notes External links The Norman B. Leventhal Park Garage at Post Office Square SAH Archipedia Building Entry 1874 establishments in Massachusetts Squares in Boston Financial District, Boston Privately owned public spaces