The Great Northern Road Trip visits 4 national parks on a single road trip ... Driving around the Great Plains region of Wyoming, North Dakota, and South Dakota, road trippers can experience ...

but they offer just a glimpse of the variety to be found in the 429 park units (including 63 national parks) of the NPS. Set in the majestic Rockies of northern Montana, Glacier National Park ...

Above the northern border of the U.S., the plains extend into the provinces of Manitoba, Saskatchewan, and Alberta. The Great ...