This shallow pit was once used to send over 20,000 buffalo plummeting to their death.

The first declared National Monument in the United States.

One man's ambition created this psychedelic log home.

The formidable fowl can be found standing near an isolated hiking path.

The largest covered bazaar in the world.

Modern-day cave dwellers carve elaborate homes out of volcanic debris.

This lake in northwest Iran has started turning from green to red more frequently than scientists are comfortable with.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

A historic trade hub teeming with gorgeous architecture, colorful goods, and vibrant designs.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

An underground magnet for ever-changing street art.

Civil War soldiers, captains of industry, and paupers all interred on historic grounds.

A rare wooden coffin set vertically into the Gothic arch of an ruined church.

The western face was supposedly left clock-less to snub the Welsh.

Chester Cathedral is home to a unique painting crafted on a canvas of cobwebs.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

As the Dead Sea continues to deplete, massive sinkholes open along its banks.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

The tallest waterfall in the Judean Desert is named for its connection to a biblical figure.

Largest display of Wesleyana anywhere in the world.

Mysterious ancient boulder carved with petroglyphs in the mountains of Western North Carolina.

Founded in 1925, this folk school attracts students from across the country and preserves traditional Appalachian art.

The remains of the iconic train crash from the movie The Fugitive can still be found rusting along the Great Smoky Railroad.