Exit highway 401 at the Harmony Rd. ramp
(exit # 419).
Go south on Farewell St. to Col. Sam Drive.
Turn left (east) and follow to GM's headquarters.
You can access Second Marsh Wildlife Area, trails
and viewing platform from the west parking lot. From the east
parking lot you can access the main trail and the Dogwood
Trail for the visually impaired within the McLaughlin Bay