A petroglyph map of the upper Snake River carved by prehistoric hunter-gatherers.

Natural rock water slides hidden in the remote forests of northern Idaho.

This former luxury resort in Kaua'i is now an abandoned relic.

A Hawaiian stairway to heaven—that you can't climb.

Ten acres of the Kula Forest Reserve make up this wonderous state park.

Once the site of the Hawaiian monarchy, this building was originally designed as a palace.

This narrow coastline trail through the dense Kauai wilderness is among the most beautiful and dangerous in the world.

This legendary urban waterfall creates a dazzling display of rainbows.

Submerged lava formations create incredible waterworks.

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

This industrial area was the dumping ground for massive amounts of trash, some of which washes up as tiny bits of sea glass.

Race through the maze, get your name on the sign.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

A tunnel of hardened lava along Maui’s famous Road to Hana.

This black shoreline is made up of exploded lava particles.

More than a century after her death, Little Gracie Watson remains one of Savannah's most often-visited residents.

An early-19th-century hotel with a past that is steeped in the Civil War.

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

A beautifully detailed Victorian house designed to be easy to flee, built by a man haunted by fire.

A mysterious inscription may hold a clue about the "Lost Colony" of Roanoke.

This haunting tombstone comes complete with a heartbreaking story of love and loss.

3/4-scale model of the White House in Atlanta, Georgia.

The perfectly named cave drop is the deepest in the continental United States, almost matching the height of Seattle’s Space Needle.

They call this long foot bridge a swinging bridge, but really it's the bouncing you have to watch out for.