A tribute to Ponce de Leon's supposed quest for eternal youth.

Intertwined, interspecies trees which locals believe can grant boons to lovers.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

Bat house that has only ever housed bat for one night; they all flew away and never came back.

A monument celebrating the idea of reaching inaccessible places.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

The world's smallest park was dedicated in 1948 as the only colony for leprechauns west of Ireland.

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

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

An optical illusion found amid a logged redwood forest.

This massive redwood tree has a hole in the base big enough to drive through.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

Life's work of sculptor Elisabet Ney remains preserved in her last studio.

One part antique store, one part curiosities hodge-podge.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

This is one really big nut.

Twice a year, visitors can tour the desolate site that birthed the Atomic Age.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

What is the Thing?

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

The ghostly remains of an accidental sea.

Version of the French Riviera destroyed by the sea.

Granting the right of way to ships over surface traffic since 1917.