For soaking up the scenic grandeur of the North American continent, nothing compares with Amtrak’s California Zephyr train. This classic three-day journey travels nearly 2500 miles (4000km) across prairies, deserts, the Rocky Mountains and the Sierra Nevada on its way from Chicago to San Francisco. Scenery is magnificent throughout – especially when seen through the floor-to-ceiling windows of the lounge car – but if you can only do one section, opt for the riveting 185-mile (298km) stretch between Denver and Glenwood Springs, where the train travels through an often roadless wilderness of deep, narrow gorges near the Colorado River’s headwaters.
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