Highly spherical boulders on the shores of New Zealand.

A modern zoetrope on the New York City subway.

A 200-year-old bar is all that remains of one Mississippi River town's rough-and-tumble past.

These elusive, isolated rodents evolved into a distinct, locally iconic subspecies.

This quirky collection is an interactive exhibit crammed with creative contraptions and tinkered-with toys.

Eastern Bloc nostalgia, anybody?

One of the oldest wine cellars in Germany is now a restaurant beneath Bremen's town hall.

Old ships and machinery fill a historic harbor in the city that's home to Europe's largest port.

This hotel was once home to a steamliner company and became the final rest stop for Europeans heading to the New World.

This proud Teutonic warrior rises out of a German forest heralding a victory and measuring lightning.

Take a stroll through the hellish grotesques of Hieronymus Bosch in this elaborate Netherlands church.

A memorial for a young woman and her ghost, which are claimed to have caused countless deathly shipwrecks.

This former steel and coal plant is now a neon-lit industrial fantasia.

The Bauhaus-style former industrial complex is considered the world's most beautiful coal mine.

No need to strap in for a “ride” on this walkable roller coaster.

Thousands of flowers create enchanting pink tunnels over the city streets.

This mine is home to the largest man-made hole in Europe.

The first green space constructed on an elevated viaduct.

A poem by Arthur Rimbaud is inscribed on the wall of a street that, while it is only one block long, plays a key role in multiple novels.

Noirish green neon marks the location of one of the oldest private detective agencies in France.

The video game-themed street art first popped up in the French city.

Elvis's own personal tropical hideaway.

An ivy-covered arch bridge dedicated to Tejano music singer and legend Rosita Fernandez.

A recreation of an Old West apothecary full of curios.