Hidden inside one of the world's most well-visited zoos is a secret plaque promising eternal life.

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

A former hardware store near Yerba Buena is the official home of California's history.

The second building of its name to occupy this location might be the finest flatiron building in San Francisco.

Outstanding taxidermy dioramas showcase the grandeur of the continent's wildlife with spooky realism.

You can still ride this 100-year-old work of art in Brooklyn's largest public park.

Amid the marketing blitz of modern Times Square is an elegant holdover from its showbiz glory days.

An Inca spa, military outpost or maybe… both?

This demon atop the Notre-Dame de Paris looks utterly bored.

A Christian monastery stands on what was once a holy Incan temple.

A controversial magical figure is hidden within a diorama of the city.

Where the legendary Orson Welles got his theatrical start before "Citizen Kane."

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.

Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.

A beautiful Victorian statue shows France's enduring love of the rhinoceros.

This small monument to the great inventor contains a time capsule and a Wi-Fi hotspot.

One of Amsterdam's narrowest houses is located right across the canal from its widest.

The last of Amsterdam's original sea level markers remaining in place.

Two large-scale sculptures of Adam and Eve greet visitors in the nude at the Time Warner Center in NYC.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

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

Over 120,000 curious objects that have shaped our modern world.

The behemoth beasts engaged in an epic battle is the second-tallest statue in the contiguous United States.

A world of whimsy and wonder aboard a one of a kind historic landmark vessel.