Though many Colorado mines ran dry, the rail lines that once served them are as prosperous as ever. Year-round, thousands of passengers climb aboard these historic lines that travel along sheer cliffs ...

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Currently, all eyes are on the state’s golden aspens — but there’s another glittering treasure hidden beneath the surface. Although many boom towns went bust well over a century ago, underground mine ...

The trains are destinations in themselves, offering a mix of spectacular sightseeing, onboard dining and glorious open-air observation cars. By Michael Harmon In the 19th and 20th centuries, railroads ...