The meteor that sealed the fate of the dinosaurs landed at this site, one of the largest impact craters in the world.

This small archipelago in northern Lake Superior was formed by a massive meteorite impact 450 million years ago.

This small piece of Michigan is entirely surrounded by Ohio.

Everyone's favorite clay duo immortalized in bronze.

This is the oldest Roman-made bridge in the city still existing in its original state.

Wandering this ancient burial place offers a glimpse of the afterlife in the fresco-adorned tombs of an ancient Etruscan civilization.

Over a thousand feet beneath the Detroit streets is a subterranean metropolis few are allowed to enter.

With a floor made of thick glass, this observation deck offers a full view of Sunwapta Valley's mountains and rivers.

This lonely gas station has stood at this location since 1917.

Next to the Leaning Tower of Pisa is a cemetery home to ancient sarcophagi and disturbing murals.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

A statue commemorate Tommie Smith and John Carlos's brave protest at the 1968 Olympics, a watershed moment for civil rights.

Remnants of a 4th-century church with vivid medieval frescoes and ancient sarcophagi hide beneath this old basilica.

A cooled lava flow from the Haleakalā volcano formed these surreal-looking columnar basalt structures.

This 135-year-old weather station studied the effects of the climate on human health.

This exhibit is one of the largest and most well-preserved collections of Jurassic-era trackways in the United States.

A 2,000-year-old engineering wonder hides beneath an Italian town.

Buy a token from the liquor store and you can make this beast spew flames on command.

The sculpture of the deceased cockatoo flops atop its personal plinth.