A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

A preserved oak tree about 3,500 years old found in Riga, Latvia.

Step into the cool deep past and unknown future of who begat who.

The clock that sets them all.

The "Greatest Sewer" of ancient Rome is one of the oldest sewer systems in the world, and is still in use.

A perfect circle of twenty-four mysterious holes dates back to prehistoric time.

Roots and stumps that lay inundated for two millennia are on display in Japan's city of three mysteries.

An ancient iron pillar in Delhi that seems to be rustproof.

Living fossils in this remote Australian bay provide a glimpse of what Earth may have looked like 3.5 billion years ago.

The world's first time capsule lies behind a welded steel door in Atlanta.

A trash dump made beautiful by nature's power.

The home of half the world's population of critically endangered mountain gorillas.

Mining town from the late 1890s, once home to Calamity Jane.

Derelict buildings are all that remain of a complex at the site of one of the worst mining disasters in Montana history.

This angular Dwarven tunnel cuts through a mountainside in Glacier National Park.

The rocks of a certain area of Butte, Montana give off a musical ring when hit.

See the computer’s history revealed over the course of 20,000 years.

The residents at this Yellowstone wildlife park will certify your cooler as "bear-proof."

This off-the-beaten-path abandoned town is a relic of Montana's silver mining boom.

A cablecar-station-turned-revolving restaurant with 360-degree views of the Swiss skyline.

This unassuming cheese empire in rural Oregon churns out more than 150,000 pounds of cheese each day.

Taiwan's last Chinese character letterpress preserves the dying art of Chinese character mold making.