The longest of the four remaining covered bridges in Missouri.

A throwback train ride transports passengers through one of the lesser-known national parks in the country.

For decades, this waterfall remained hidden because of an artificial dam.

An elegant sandstone stairway built by the WPA still connects two neighborhoods in Akron.

World's largest herd of white deer populate a former U.S. Army depot.

A six-story treehouse offers spectacular views of New York's Finger Lakes region.

This exhibit allows visitors to wander through the interior of a replica Ice Age glacial cave.

One patriotic farmer's ode to the 9/11 tragedy remains even after the farm changed hands.

This oversize piece of novelty cookware once cooked the largest pancake in the world.

In upstate New York, gorgeous waterfalls and a watermill are slowly being reclaimed by nature.

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

A natural gas leak provides a flickering flame beneath a waterfall.