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Cannonball, North Dakota

North Dakota is full of natural wonders, and it's no wonder that so many people travel across America to see these attractions for themselves. But how about a visit to Cannonball? At first glance, you might assume that this town was so-named because it was home to the production of cannonballs, but that's not the case. Instead, it was called Cannonball due to the concretions that are dotted around the local area.

Shutterstock/Zack Frank

Yes, anyone who visits Cannonball will see these strange boulders scattered around the place - and they look exactly like cannonballs! These geological wonders definitely need to be seen in real life.