You can learn a lot about scientific advances from taking a tour of a medical facility. Check to see if Tewksbury Hospital is open to visitors while you're in town.
When you've spent a bit of time at this Tewksbury health care institution, why not make your way to University of Massachusetts Lowell, Tsongas Arena, and Lowell Memorial Auditorium? They're not far from Tewksbury Hospital and also a hit with many travelers.