The US’s Longest Tunnel Deep beneath mountains and remote wilderness lies one of America’s most remarkable infrastructure ...

Pennsylvania is home to one of the most fascinating tunnels in America. The Laurel Hill Tunnel stands out not just because it's a passage through a mountain, but because of its incredible history and ...

The invention of the locomotive in the early 19th century permanently altered human history, giving people of all income levels the ability to travel long distances in a short amount of time. Trains ...

Tunnels are used to carry traffic through some of the most extreme terrain on the planet and they help ease journeys with reduced travel time. While most tunnels offer a short underground burst of ...

Todd Caddy is the man behind the mirrored glass at Pittsburgh’s front door. His job: tunnel manager for PennDOT. From his office on a recent weekday morning on the south face of Mt. Washington, Caddy ...

The Lebanese man accused of masterminding a plot to destroy Hudson River train tunnels had visited America at least once — a trip to California six years ago, a federal law enforcement official said.