Jesus' footprints and the first catacombs in the world.

Nuclear reactor created the plutonium used on Nagasaki.

Portlandia is the second-largest copper repoussé statue in the United States.

Ancient snack bar of the Roman Empire re-opened.

This popular bar has been blurring the line between normal and edgy for more than 75 years.

Their motto is, "We've been bonkers for hats even longer than you have!"

The culprit who accidentally lit this 3,500-year-old tree on fire stated "I can't believe I burned down a tree older than Jesus."

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A historic presidential getaway on the continental United States' southernmost island.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

Scattered throughout London are ancient remnants of the city's former bounding wall.

The world's first experimental nutritionist is memorialized as the "Hippocrates of naval medicine."

360° views of the city plus five floors of optical illusions and hands-on science.

Famously misunderstood wonder of the ancient world

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The narrowest street in Canada was once a spot for dastardly doings, now a historic piece of Chinatown.

An operating lighthouse from the 1860s.

"They died with their boots on."

An apocalyptic seismic event creates a deadly chain reaction that ends with a 6-mile long lake developing within weeks.

These pretty kitties killed and ate as many as 135 railway workers.

Go inside to really appreciate this 500-year-old technological masterpiece.

No Gordon Lightfoot song, only a barebones monument to greed.

Home of Jake the Alligator Man, the mummified remains of a cigar smoking, cross-dressing celebrity of the Northwestern coast.

A modest reminder of treacherous waters at the Golden Gate.