Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

A suburban museum tells the story of a historic transportation network and even provides rides in antique trolley cars.

The whole world in one water tank.

This striking statue brings a scene from the African savannah into central London.

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

This unusual lava tube spouts seawater during high surf.

This iconic 1958 tower welcomes air travelers to Tucson with neon-lit letters and architectural style.

Perched atop a brick smokestack, this enormous lug nut symbolizes the local minor league baseball team.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

Once the site of a Native American harvest festival, this humble clearing later played an invaluable role in the birth of jazz.

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

This surprising gem is a world-class archeological museum hidden at the University of Chicago.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

The spot where three Protestant clergymen were burned at the stake during the reign of "Bloody Mary."

This 17th-century pub once had a hole in its wall so the neighboring blacksmith could easily access beer.

This sprawling market is a one-stop shop for traditional Kazakh foods, from mare’s milk to sheep’s head.

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

At an isolated roadside rest area stands a monument marking where famous Western star Tom Mix died in 1940.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

This unique competition celebrates an American Indian and Canadian First Nation cultural tradition.

This weeping, 10-foot-tall sculpture was a maquette for a 9/11 memorial.

This local gem houses the largest collection of pre-Raphaelite paintings outside of the U.K.

The ruins of Theodore Roosevelt's beloved ranch stand in a forgotten corner of a national park named after him.

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.