For thousands of years, Native American hunters drove buffalo straight off this cliff in Montana's Yellowstone Country.

After covering almost 1.5 billion acres, the survey's still not finished.

A century-old network of freight tunnels underneath the city's historic business district.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

The world's longest and deepest train tunnel.

A mistaken marker makes an erroneous claim along the historic Old Divide Road.

A climbing route in the mountains of Italy’s Dolomites, built for soldiers during World War I.

Iceland's largest geothermal mud pool is a little bit haunted and a little bit dangerous.

Activists are fighting to preserve these unfinished highway ramps as a tribute to the citizen revolt that halted their construction decades ago.

A line of blue paint marks the route of the inaugural parade.

One of the largest collections of wildlife art in the United States, built into the side of a cliff in rural Wyoming.

The 15-foot-wide, 2-ton pan fries hundreds of chickens once a year.

A picture-perfect town, perfect for blowing up.

A stoic rock cairn is all that remains to remember one of the more brutal instances of frontier treachery in American history.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Elevated freight railway turned wildly successful urban park.

Rising from the sea like a stone monster.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

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

Famously misunderstood wonder of the ancient world

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Staves, storm-calling, and of course, necropants.

A serpentine highway twists and turns over the treacherous Norwegian Sea.