An extraordinary mixture of natural beauty and man-made phenomena.

Rare recess caves fill this unbelievably beautiful Ohio park.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

See massive fossils that are over 200 million years old in northeastern Arizona.

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

Carved by a waterfall in a hard-to-reach rock formation, this heart-shaped rock has inspired romantics for decades.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

Quite simply the largest tree in the world (by volume).

The magic's in the hole!

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Around half a million years ago, these magnificent columnar basalt cliffs were formed from cooling lava.

The only house in Oregon designed by the famous architect, Frank Lloyd Wright.

This great stone guardian of the forest is a relic from the land's volatile volcanic past.

While it is not equipped to peer into outer space this observatory looks like it was built on the moon.

A volcanic landmark located on an Ice age lake bed.

Unknown to many, this sparkling turquoise lake hides amid Oregon's snowcapped mountains.

Formerly secret, precariously perched boulders.

A massive sea stack famous for its appearance in The Goonies.

100-year-old shipwreck you can walk up to at low tide.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

This lake in the Cascades lives up to its name, disappearing down a hole every spring.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

A clear blue swimming hole with hidden caves, still unexplored.