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

There's a mini version of Iguazu Falls hidden in the Balkans, and it's got a rope swing.

This geothermal hot spring hides beneath a slowly growing mineral dome.

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

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

A priest with no formal artistic training used basic house paint to create gorgeous religious scenes inside this historic church.

A controversial memorial at the place where Captain Cook met his violent end.

The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.

Try your hand at old-fashioned coffee growing at this museum devoted to one of the world's most coveted beans.

These ancient sacred grounds granted amnesty to those who managed to reach them.

A beach made of semi-precious green sand on the Big Island of Hawai'i.

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

This black shoreline is made up of exploded lava particles.

Was the ravaging reptilian that terrorized this village a dragon, or an escapee from a London menagerie?

The only working large-scale tea plantation in the United States.

This recently rediscovered Civil War-era submarine was the first to ever sink an enemy ship.

Paths are maintained, but trees have taken over plots.

Oldest unrestored plantation house in America that is open to the public.

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

Wander through more than 20,000 square feet filled with an amazing collection of orchids.

One of the few surviving original NASCAR dirt-track speedways.

In a pedestrian tunnel on North Carolina State’s campus resides an expressive and artistic free-for-all.

Carrying on the legacy of a short-lived experimental school tucked away in the mountains of North Carolina.

A folk art mecca famous among outsider art fans.