The Grand Canyon of Texas.

The world's smallest park was dedicated in 1948 as the only colony for leprechauns west of Ireland.

100-year-old shipwreck you can walk up to at low tide.

A multi-storied adobe complex has been inhabited for more than a thousand years.

The second largest waterfall by volume in the U.S., Willamette Falls is outdone only by Niagara in the amount of water that is pushed northward.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

Featuring a casually threatening atmosphere along with dessert and coffee to die for.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

The magic's in the hole!

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

This frequently-photographed waterfall takes only a short hike to visit.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

A heavenly experience, right here on Terra Firma.

A beautiful geyser under environmental threat.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

A beautiful 62-acre Catholic shrine and botanical garden.

The seamy, underground secrets of Portland's criminal past.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

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

Located in the shadow of a volcano, this church is tied to the culture of the Purépecha people.