The Civic Center was filled with Dinos, Dads and their families today.
The "Discover Dinosaurs" exhibit has been in Bismarck for the last couple of days.
It features many robotic dinosaurs that growl and move around just like real ones would.
Kids also got the chance to ride dinosaurs, mini golf, jump in a bouncy house, and find fossils..
It was a fun time for people of all ages and a perfect way to spend Father's Day.
"Just have a sense of togetherness and hang out together and all have a good time and it's been great... Seeing the smiles on their faces is what makes Father's Day, Father's Day really."