The centuries-old trees are draped with Spanish moss to make them look like wizened elders.

This trio of Dominican cave lakes comprise a colorful biosphere of natural life.

The illuminated falls are a gem in North Cascades National Park.

Hundreds of pieces of ancient Taíno art cover the walls of this Caribbean cave system.

On the Oregon coast there is a natural hole that seems to be draining the sea.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

A cluster of historic bathhouses built on the famed hot springs that gave the Georgian capital its name.

Everything in this miniature world was handmade from matches, paperclips, wires, tin cans, and other everyday objects.

Romania's "Red Ravine" is a little-known natural wonder that bears a resemblance to the Grand Canyon.

Each year these high desert hills are absolutely covered with poppy flowers in a surreal show of nature.

A unique seaside cave where Aleister Crowley faked his own death.

Mother Nature outdoes herself with this stunningly beautiful set of caves carved into marble.

A massive underwater sinkhole made famous by Jacques Cousteau.

A grove of "candelabra redwoods" deep in California's Lost Coast.

One man has installed bathtubs into the Utah desert floor to harness the powers of a natural hot spring.

The site of a defunct mill, that once supplied marble for the construction of the Lincoln Memorial.

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

Perhaps the most spectacular grotto along the Algarve coastline.

Hidden on a cattle ranch in Arizona, this bookstore has been celebrating Southwest literature for more than 40 years.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

Gnarled canopies of pink and purple wildflowers arch over the trail to the summit.

This National Natural Landmark is one of the best examples of a “mass wasting” in the world.

There are eight natural springs around town, each with a slightly different taste.

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.