Steep canyon walls hide a forested oasis in the West Texas desert.

The highest point in Texas is capped by a big silver pyramid.

Natural catch-basin rocks covered in thousands of drawings spanning many millennia.

A Bhutanese temple gifted from the isolated Himalayan kingdom is now a surprising cultural gem located at the University of Texas at El Paso.

Search for traces of the dinosaurs that roamed here more than 90 million years ago.

One part antique store, one part curiosities hodge-podge.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

An emerald-green grotto just a short trip from Austin.

Unknown to many, this sparkling turquoise lake hides amid Oregon's snowcapped mountains.

The only Native American museum along the Oregon Trail, run by the peoples who have lived on the land for generations.

A heavenly experience, right here on Terra Firma.

A beautiful 62-acre Catholic shrine and botanical garden.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

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

One of the best places in Florida to spot rare, carnivorous pitcher plants.

This now-deactivated naval base defended the Florida coast for centuries.

One of the only Florida forts to remain in the hands of the Union all through the Civil War still stands as a historic stronghold.

Designed by Maya Lin, the memorial honors 41 individuals who died fighting for equal rights between 1954 and 1968.

Colloquially known as "the lynching memorial," this is the United States' first memorial to the victims of racial terror at home.

This botanical garden has been nicknamed "Alabama's Little Corner of Greece."

Monument to the cotton-destroying boll weevil.

A cemetery for only coon hounds in northwest Alabama.

Dothan, Alabama has been invaded by scores of anthropomorphic peanuts.

This 12-foot-tall T-rex is the largest K’Nex skeleton sculpture in the world.