Lovers of all things geology will appreciate these strange and beautiful cannonball concretions; a North Dakota classic that'll leave you scratching your head.

North Dakota covers more than 70,000 square miles, and much of that land is covered in badlands, grasslands, and farmlands growing crops like sunflowers. Here are some of the top places to visit ...

The closest major airport to Badlands National Park is in Rapid City, South Dakota. From there ... the main spot for information in the North Unit. The building also has a fossil preparation lab where ...