Some of the best attractions in South Dakota are right off I-90 ... of the Badlands; it will come in handy. (FREE) Rapid City is the gateway to the Black Hills and Custer State Park.

The closest major airport to Badlands National Park is in Rapid City, South Dakota. From there, visitors can drive for about an hour to the ... From Rapid City, the quickest route is to take ...

A "Homecooking" sign, perched on the side of a gravel road in southwestern South Dakota, stops me ... draw 900,000 people a year to Badlands National Park, the heart of the landscape.

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