Strange red rock formations that have been attributed to a higher power for hundreds of years.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

A geological mystery on Camelback Mountain.

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

At 207 feet, one of the world's longest continuous escalators.

Largest Roman Catholic church in North America.

The narrowest street in Canada was once a spot for dastardly doings, now a historic piece of Chinatown.

"Girl in a Wetsuit" is what happens when a sculptor has to find a way around a 100 year old copyright.

This WWII-era military installation once held an entire city within its walls - now, its walls are falling down.

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

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.

Site of the greatest known waterfall that ever existed.

The only road through the heart of Glacier National Park.

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

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

A pop-culture attraction outside of Dyersville, Iowa, hits a home run.

This simple home was the beginning of a long journey for the iconic Western film star.

Home with Gothic windows featured in a famous painting.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

A burnt orange monolithic dome structure perched on a hillside near Interstate 280.

A classically inspired temple in Redwood City.

Where commuters walk through remnants of an ancient Greek necropolis.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

Tubing through a cave lit with glowworms is a magical underground experience.