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

Native Americans built this circle of stones, which was used to predict astronomical events.

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

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

A beautiful geyser under environmental threat.

The first declared National Monument in the United States.

Over thousands of years, this slot canyon was carved out of the bed of an ancient lake.

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

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

In 1952, a strange encounter in the woods of West Virginia led to the legend of a 10-foot-tall monster with glowing eyes and a distinctive style.

The largest burial mound in the United States holds the remains of prehistoric West Virginians.

Time travel with sweets across history at this research-based candy store.

This red-eyed chrome beast pays homage to the popular modern myth of West Virginia's insectoid monster.

A small storefront museum explores the history and myth of West Virginia's famous urban legend.

Protected from the elements, these Native American rock paintings have survived approximately 250 years.

Orcas on display and in the water.

This grove of ghostly cedars was killed in 1700 by an enormous tsunami, felt from the United States to Japan.

Walking by this fence is like strolling along a portal to various fictional worlds.

An exercise in patience and imagination, where Mother Earth turned common stuff into precious hidden treasures.

A cave interior in the shape of the ancient rhinoceros, created by lava cooling around its carcass.

Site of the greatest known waterfall that ever existed.

Cave carved out of a huge snow drift collapsed killing one and injuring five in July 2015.

Native American burial mounds? Giant gopher dens? No one knows what created the Mima Mounds.

Legend says that these tall basalt pillars are the petrified wives of a trickster god.