The cardinal directions, set in stone.

On the edge of this small Washington Park, a piece of the Earth's mantle has come to the surface.

In Tucson a giant metal snake helps pedestrians cross a busy highway.

This Arkansas town is known for its gangster history, its healing waters, and now its brews.

A crumbling hospital from the 1850s on Roosevelt Island.

Football field-sized microalgae production tanks on the Hawaiian coast create a stunning view from space.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

This legendary urban waterfall creates a dazzling display of rainbows.

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

A model of a galactic embassy is hidden in plain sight along the highway, proposed by a UFO religion to find the aliens that created life on Earth.

Watch the newest land on the planet form before your eyes.

San Diego's most historic and haunted home.

One of the largest trees of its kind in California.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

One man's quest for the ultimate road trip vehicle.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

Performers, intricate sets, and a real speakeasy tell the story of the 18th Amendment.

This set of rickety spaceships are prepared to give alien travelers a place to relax and go to the bathroom.

A quirky Poe-themed joint on an island keen to celebrate its overlooked connection to the famous writer.

Charleston's historic city jail once held everyone from pirates to Civil War POWs.

Thirteen pastel palaces in downtown Charleston add a gorgeous splash of color to the city.

Paths are maintained, but trees have taken over plots.

This small memorial is almost as well concealed as Smalls himself was on the night he sailed to freedom.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.