Boston City Hall Plaza is in the heart of our city. It is easily accessible by train and subway. The "T" station that is directly on the plaza is Government Center (Green and Blue Lines). State Street is a few steps from the plaza (Orange and Blue Lines) and the Haymarket station is across from City Hall (Orange and Green Lines).
It is easy to connect from the train stations. North Station is on the Green and Orange Lines. South Station is on the Red Line and connects to the Orange Line at Downtown Crossing.
To "google" Boston City Hall, use the address One City Hall Plaza.