One of the largest collections of wildlife art in the United States, built into the side of a cliff in rural Wyoming.

This rustic old building is said to be the most photographed barn in America.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A beautiful geyser under environmental threat.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

The world's brightest bioluminescent bay.

Manatees congregate around a power plant's discharge canal where the water is especially warm.

A building so large that it has its own weather.

A cement mixer-turned-kaleidoscope in downtown Norfolk offers different views of the city.

This evocatively named natural crevasse was created by a torrent of water that smashed right through a granite deposit.

One of the most scenic falls in Massachusetts has a history of death and grim legend.

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

The mansion home of author Edith Wharton.

A monument to the Mohawk people stands along an old Native American trade route.

This tall Massachusetts folly got its name thanks to all of the purple prose its vistas inspired.

Locals purchased this abandoned quarry in order to make sure it continues to be overgrown.

A stunning garden filled with fantastical environmental folk art and sculptures.

Founded by the famed children's book artist, this museum spreads an appreciation of the arts through picture books.

The only diamond mine in the world where you can keep what you find.

A bizarre roadside attraction and the first instance of miniature golf in the world.

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

The world's longest known cave system.

This replica of the Greek structure is in the heart of Nashville.