Last year I visited the Charles River Museum of Industry & Innovation in Waltham which is in one of the old mill buildings near Moody Street. Its a small museum, but interesting to folks who want to learn more about the area, the old watch factories, and printing machines.
Here's the description from the museum's site:
Located on the scenic banks of the Charles River in the historic 1814 Boston Manufacturing Company textile mill, CRMII is on the National Register of Historic Places as America’s first factory. Hands-on exhibits feature American innovation and invention from 1812 to the present day, with exhibits on Waltham’s Boston Manufacturing Company, the Metz Company, the Waltham Watch Factory, and Orient bicycles from the Waltham Manufacturing Company.
Here's a slideshow from my visit: