Let these towering termite-building structures tell you where to go.

Peek into a cave of giant, glimmering crystals.

This remote camping site offers incredible stargazing opportunities.

The second generation of a mighty volcano rises from the sea.

Mysterious concrete spires left on a small Canadian hill.

The oldest operating steam locomotive in Canada runs along this heritage railway.

The largest single concentration of harmless garter snakes in the world is a writhing Canadian serpent orgy.

Twice a year, this road is closed off to allow for the migration of thousands of snakes, reptiles and amphibians between cliffs and a swamp.

One of the first amphibian migration tunnels in the United States encourages a tradition that has inspired Amherst residents for decades.

Special tunnels built so that frogs won't be killed when crossing the highway.

The world's longest wildlife overpass provides Hilversum's critters with a safe alternative to trying their luck on the roadway.

For one month, the fields and skies of Gibbon, Nebraska, come alive with one of the largest gatherings of sandhill cranes in North America.

Go take a picture with the inventor of the daguerreotype photographic process.

A bronze statue of the famed Prussian naturalist commemorates the year he spent in Mexico.

Explore the history of Mexico's lesser-known ancient alcoholic beverage.

This heritage rail line meanders through Delaware’s Red Clay Valley.

Called the "Armenian Stonehenge," this ring of menhirs pierced with holes may be a prehistoric astronomical observatory.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Light still pours into the ruins of this ancient Islamic observatory.

Eastern zen meets Western grit in these four little trees growing out of a rock on Lake Tahoe’s Nevada shore.

Harder layers in colorful sandstone weather out as prominent “fins" and even more intricate and bizarre shapes.

Narrow slot canyons in a badland eroded into soft sedimentary rock provide an otherworldly landscape in this remote Nevada state park.

Located in the remote Monitor Valley, this travertine bowl contains a scalding pool of water.

Mine your own precious stones.