By Public Transportation:

Green & Orange Lines: Take either line to the North Station. Exit onto Causeway Street and walk northeast, crossing Medford Street. 251 Causeway Street will be on your right, just before the stoplight at the corner of Causeway St. and North Washington St.

Red Line/From South Station: Take the Red Line to Park Street station and switch to a Green Line train bound for Lechmere or North Station. Take the Green Line (3 stops) to North Station. Or take Red Line to Downtown Crossing and switch to an Orange Line train bound for Oak Grove. Take the Orange Line (3 stops) to North Station. See directions for Green and Orange Lines above.

Blue Line: Take the Blue Line to Government Center and switch to a Green Line train bound for Lechmere. Take the Green Line (2 stops) to North Station. See directions for Green and Orange Lines above.

From Logan Airport: Take the Blue Line inbound (4 stops) to Government Center and switch to a Green Line train bound for Lechmere. Take the Green Line (2 stops) to North Station. See directions for Green and Orange Lines above.
 

By Car: