The 55-pound trichobezoar was removed from the stomach of a cow.

This 41,000-acre wetland complex is the largest marsh in the interior of the United States.

Stories of sightless fish and ghostly cowboys are only a fraction of the legends surrounding this Kansas sinkhole.

A diverse, expansive nature preserve in northeastern Kansas.

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

The United States's largest hand-dug well is topped with a state-of-the-art museum.

Marking the spot where a conquistador gave up his search for the fabled Seven Cities of Gold.

One of the Eight Wonders of Kansas and the first official National Natural Monument these stark formations look like nature's Stonehenge.

The oldest operating Mississippi River–style steamboat still navigates the Ohio River.

An enormous goose sits atop this nest-shaped home.

Thousands of unique minerals, including some of the most impressive fluorite crystals in the world.

Beautiful waterfalls grace a canyon visibly torn by a violent tornado.

A ship that lived many lives under many names is now known merely as the "Ghost Ship."

The world's longest known cave system.

A replica of one of the more than 15,000 civilian lookout towers that lined the U.S. coast during World War II.

The 44,000-ton aircraft carrier was purposely sunk to create an artificial reef teeming with life.

One of the largest Native American shell middens stands 30 feet tall.

With nickel-steel armor and three-inch thick bullet resistant windows, FDR's train was a rolling fortress.

These crumbling foundations are all that remain of the once-stately 1840s manor that gave the town of Bradenton its name.

This 140-year-old beacon off the Florida Keys marks the wreck of a Navy ship that once roamed the Caribbean hunting pirates.

The giant squid's 27-foot-long corpse lies preserved within a Sarasota aquarium.

This spiny beast guards an artist's village while vying for the title of largest lobster in the world.

One of the world’s largest and deepest freshwater springs, where mastodons once roamed.

The third tallest lighthouse in America once guided author Stephen Crane to safety.