If you're looking for some mental stimulation, pay a visit to Namdal Museum. Whether it's history, traditions or cultural practices, you'll find plenty of intriguing displays to keep your mind active here.
You'll soon learn why this Namsos collection of historical artifacts is a hit with travelers. If you're searching for more to do and see here, Rock City, Norwegian Sawmill Museum, and Norsk Sagbruksmuseum are in this area too. They won't take very long to get to from Namdal Museum.