tunnel

Louisiana's first and longest underwater tunnel opened nearly 70 years ago, but now has been permanently closed as a new toll bridge has been built.

Did you know that running underneath central Indiana are some rather eerie catacombs? It's true, and you can even tour them.

For the first time, you can get so close to Niagara Falls, that you can actually feel them. A century-old tunnel, 180 feet below takes you to an underground world and a view like never before.

Red River Gorge, in Kentucky, is a wonderfully pristine natural area to explore with a secret, frightening twist.

One of the most amazing homes you'll ever see is currently for sale in the Finger Lakes of New York State. What's most striking is the underground tunnel on the property.

There are secret tunnels along the entire length of the Kansas Turnpike that most drivers don't know exist. These bunkers and tunnels could also be lifesavers.

It's located on South Henry Street and the guesses as to what it is are all over the place.