A treasure trove of pathological, forensic, parasitological, and anatomical specimens.

These falls, sometimes called the "Niagara of the West," still put on a good show at the right time of year.

At the base of Peña de Bernal, a small business keeps evidence of alleged extraterrestrial visitors on display.

Dr. Henry Cogswell hoped that his elaborate drinking fountains would dissuade people from drinking alcohol.

The flow from this waterfall sometimes comes out of springs below its rim.

An average of 33 million gallons of water pour out of the collapsed cave at the heart of this spherical spring.

Two tall rocks sit at the center of this site, once the home of a large Ancestral Puebloan community.

This once-popular otherworldly landscape was formed by one of the largest volcanic eruptions in history.

No one knows exactly how deep the world’s deepest geothermal hot spring is.

The deepest spring in Missouri.

The upstairs reading room is packed with millions of rare books, literary manuscripts, and historical treasures.

Decades of discarded bottle caps line this alleyway, a fixture of Texas A&M.

A popular swimming hole that hides one of America's most deadly diving spots.

A Texas cave network is home to some of the world's most spectacular-looking and bizarrely named mineral formations.

A mysterious and terrifying public art goblin seemingly meant to inspire local legend.

This monument to the victims of a tragic explosion is said to turn and look at passing cars.

Twenty-year effort to raise a castle using tools and techniques from the 13th century is now abandoned in the Arkansas woods.

The old Route 66 town straddling Texas and New Mexico died along with the Main Street of America.

Celebrate the history of the rich and truly misunderstood relationship between man and pigeon.

In Paris, Texas they have their own Eiffel Tower, it just has a cowboy hat on it.

In Paris, Texas, even Jesus wears cowboy boots.

A statue in the Texas town that proudly calls itself the killer bee capital of the world.

The only international border marker within the United States.

A registered historic landmark shrouded in unsettling local legends.