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

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

This freshwater spring fills with 10,000 gallons of water per minute.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

This pebble beach is so beautiful that taking its rocks is against the law.

Half of a waterfall goes into the river while the other half seems to disappear.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.

This 100-foot tall bluff located in the western plains of Kansas overlooks a massive reservoir.

These otherworldly limestone formations jut out from the Kansas prairie.

Dakota legend claims this locally iconic pinnacle was once part of a sacred burial site that was cleaved in two.

As the glaciers retreated out of northern Wisconsin, this unique natural wonder was crafted.

The first declared National Monument in the United States.

These curious caverns have been home to mushrooms, gangsters, and disco.

At certain times in the fall and winter, the sunlight makes this natural sandstone arch glow.

A multicolored mineral mound dribbles piping hot spring water right off the side of a highway.

What do a giraffe, an elephant, and reasonably priced steaks have in common? This roadside restaurant filled with exotic taxidermy.

A four story, football field-sized, nine-grotto creation made of shells, minerals, and rare stones.

This beautiful ancient site is dotted with perforated sandstone pillars considered sacred by some Native American groups.

After sitting abandoned for decades, this historic mine is now the only publicly accessible chalk room and pillar mine in North America.