Weston Observatory is located in the north part of Weston, Massachusetts at 381 Concord Road.
From points North, South: Take Rt. 95 North or South (towards Waltham/Weston) to Rt. 20 West (Exit 26). Follow Rt.20 West into Weston and just after Crescent St. (on your right) bear right onto Boston Post Road. This takes you into Weston Center. Pass through the center and take a right onto Concord Rd. Follow Concord road through two forks, bear left at the fork with Merriam Rd. and bear right at the fork with Sudbury Rd. Right after the fork with Sudbury Rd., turn right into the entrance of the observatory at 381 Concord Rd.
From points East: Follow Rt. 20 West through Watertown and Waltham to Weston and follow the directions above.
From Points West: Follow Rt. 20 East through Wayland to Weston. Bear left onto Boston Post Road, right after Elliston Rd. Before ariving in Weston Center, take a left onto Concord Rd. and follow the directions above.