Follow this historic route, or put together your own loop.
A Grand Automobile Tour - 5,600 miles that loops through the Western United States and connects twelve National Parks.
Henry Ford's assembly line made automobiles accessible to more Americans, and after WWI, the public interest in driving and in auto trails began to take off.
"See America First" promoted tourism in the National Parks, and this epic tour became something aspired to by the average American family.
Rocky Mountain National Park with it's Scenic Drives, including Trail Ridge Road was a central stop on the route.