If you're craving some intellectual stimulation, pay a visit to Regional Museum. Whether it's history, culture or beliefs, you'll find lots of thought-provoking displays to keep your mind active here.
Once you've finished checking out this collection of historical artifacts in Grudziadz, there are stacks of other things to keep you busy in the area. Many visitors make a beeline for Planetarium and Observatory next. It's not very far from Regional Museum.