Urban and progressive in some places, wild and unexplored in others, North America is one big continental contradiction. Both its scenery and its cities are built on a grand scale. The dramatic skylines of New York, Seattle and Toronto reflect monumental natural wonders such as the rock sculptures of Utah and California’s giant Redwoods. The region is held together by the spine of the Rocky Mountains, which stretch for more than 4,800 kilometres between northern British Columbia and New Mexico. To the west of the Rockies is desert and canyon country; to the east is the green expanse of the prairies. The best way to pack all that sensational scenery into one visit? A classic North American road trip.