Bad farming practices caused this unnatural natural wonder.

A much more welcome kind of snowbird vacationer, manatees camp out in these springs every winter.

The only Florida state park with publicly accessible caves.

A striking lighthouse with views of the Gulf of Mexico and of a military air show.

One of the only Florida forts to remain in the hands of the Union all through the Civil War still stands as a historic stronghold.

A small museum celebrating the work of a Mississippi artist who had a unique connection with the natural world.

This 19th-century benevolent society and jazz hall was rescued from abandonment to again host live music.

The world-record holder for the longest bridge stretching continuously over water.

Some believe this tree to be more than 1,500 years old.

A 200-year-old live oak on the banks of Lake Pontchartrain.

"We Seceded Where Others Failed."

Former utopian colony based on the belief that the universe exists in a hollow sphere.

One of the oldest, tallest, and most haunted lighthouses in America.

If all members were present at the table, a sixth of the world's wealth would be under the same roof.

Constant erosion has created a surreal landscape of bleached and preserved fallen trees.

Practice your Dirty Dancing lifts in the manmade lake where Johnny Castle himself did.

A Nessie-like monster supposedly lurks in this lake.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

The tallest waterfall in West Virginia.

A mysterious castle built as a monument to lost love.

The longest spit in the United States ends at a lighthouse in the Strait of Juan de Fuca.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Founded by Cliff Barackman of 'Finding Bigfoot' fame, this museum is dedicated to the study of North America's unacknowledged hairy woodland hominids.

A beautiful geyser under environmental threat.