(CNN) — Against the backdrop of bright blue sky and the red rocks of the Colorado River canyon, a mustard-yellow train steams through the rugged landscape, the words "Union Pacific" emblazoned on its side.
British photographer Jonathan Lewis has journeyed across America's most beautiful -- and most isolated -- terrains, photographing timeless trains in spectacular landscapes across the country's West.
Lewis' pictures have a vintage postcard look -- but the photos in the book were all taken within the past 10 years.
"A family holiday to Colorado in 2000 was the first time I visited the USA and saw my first American train in Denver," Lewis tells CNN Travel.
America's railroad history
This Union Pacific train was photographed by Lewis at Sullivan's Curve, Cajon Pass, California.
The first US transcontinental railroad was completed in 1869, changing the path of America's history.
"Once a railway reached an area it was able to develop its industry -- as it had an efficient means of moving its goods," says Lewis, who is fascinated by the link between America's history and its railway network.
"Many towns were founded by railway companies to serve the railway."
The US no longer operates many long-distance passenger services, but railroads remain integral for freight trains.
America's railways -- including the route passing through Skykomish, Washington, pictured -- remain crucial to the country's transport network.
Plus, the path of the railways still plays a part in the way we get across America -- even if we don't go by train.
"Today many long-distance roads and interstates follow the original route of the railway," explains Lewis. "This was the route which was developed and is often the best route."
Notably, railways in America are still run by private companies: "They have remained private companies throughout," says Lewis. "Each with their own unique paint scheme and different operating cultures."
Great plains, great trains
The Western railroads weave through spectacular scenery, such as Snow River, Alaska.
The railroads are also intertwined with the landscape of these rural American locations: "Railways had to be built through deserts and over mountain passes, which were thought to be impossible at the time," explains Lewis.
It is the combination of classic trains -- some locomotives date from the 1960s and '70s -- combined with stunning landscapes, that make Lewis' images so striking.
Lewis plans his images carefully to ensure maximum sunlight, as in this photo at Larkspur, Colorado.
Lewis extensively researches the types of train and the surrounding scenery before he takes the photos.
"Doing research beforehand is important to understand what the railway operations are like," he says. "And at what time of day a train might show up on less busy railway lines."
"It is also important to study the...
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