Cincinnati's subway debate is stuck in the past while other cities move forward. It's time our leaders invest in the future.

Abandoned underground tunnels provide a rare look at history and architecture, and it is no surprise that explorers from all ...

Below Detroit's streets is a network of tunnel systems almost as elaborate ... remnants of hidden caverns used to store liquor during America's Prohibition, explore what lies below: Start the ...

Camp Century was built to store nukes beneath Greenland's ice. See photos of the underground, "Star Wars"-like site.

The Great Smoky Mountains are famous across the United States as an amazing place to ... and has a bit of a spooky reputation ...

Last fall when Cincinnati asked for ideas for what to do with its empty, 2.2-mile abandoned subway tunnel system, many Enquirer readers and social media commenters had the same response ...

An curved arrow pointing right. Mobile laser scans reveal London's abandoned tunnels which were once used for The Post Office Railway. The tracks are 70 feet below the surface and were used to ...