Take Route 2 West to Route 126. Turn right onto Walden Street. You will pass the Court House, Police, and Fire Stations on your right as you continue into Concord Center. 51 Walden is on the right hand side, just beyond the small bank building. If you get to the end of Walden Street, you have gone one block too far. Parking is available in municipal lots off Walden St. and Keyes Road.