My car ($US5000) and three-year-old caravan ($US10,500) at rest in Guadalupe National Park, Texas. We covered 35,000km in 10 and a-half months. : US by travel trailer

Redwood forests in Northern California are one of the wonders of the world. Curiously, they stop abruptly on Oregon's border, but that state has superb Douglas fir forests on the western slopes of the Cascade Range. : US by travel trailer

Pretty much the whole coastline of the eastern US is fronted by houses like this. Most are rented as holiday homes in summer and are empty during winter. These are on Hatteras Island, one of the outer banks in North Carolina. : US by travel trailer

A stylish, although far from new, American house in southern Illinois. Very few American houses could be mistaken for New Zealand homes or vice versa. : US by travel trailer

South Dakota's Badlands are one of the best examples of an erosional landform that appears repeatedly throughout the dry lands of the American west. : US by travel trailer

Mt Baker is only 25km south of the Canadian border in Washington state, one of the higher mountains in the volcanic Cascade Range that runs down to Mt Shasta in Northern California. : US by travel trailer

Around Tucson, Arizona, large saguaro cacti replace trees. Birds excavate nest holes between the thorns. These plants are very slow growing and live for centuries. : US by travel trailer

Rainbow Basin in inland Southern California is typical of much surrounding arid land. Campsites have roofed tables to afford summer shade in the absence of trees. : US by travel trailer

You have to wonder how the land in Lancaster County, Pennsylvania, can support so many large farming establishments. : US by travel trailer