This yawning gorge in South Dakota's Black Hills is a striking sight in the fall. It stretches out for 19 miles (31km), its rugged walls dropping for 1,000 feet (305m) each side, and the Spearfish Canyon Scenic Byway beats a scenic path through it. Be sure to stop off at natural wonders along the way, such as Bridal Veil Falls, a 60-foot (18m) cascade surrounded by woodland. This time of year the forest is bright with colour, from crimson to mustard to burned orange.

Discover the most beautiful weekend road trip in every state

The most fun attraction for fall in every state