The secret medieval communication system will whisk your words above the noise of the crowd.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

This grisly effigy displays an early Christian martyr who was skinned alive and beheaded.

This bright yellow relic is the final survivor of a short burst of seashell-shaped petrol pumps.

This metal disk commemorates the birth of a historic American holiday.

A giant Troll lurks under one of Seattle's oldest bridges.

When zealous marijuana enthusiasts kept stealing the "Mile 420" highway marker, the State of Colorado got creative.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

A wall of chewing gum moonlights as collective art.

A museum dedicated to the history and exploration of both popular music and science fiction.

A walk through the historic city center, under the streets of Seattle.

The metal leaves on this tree are engraved with the names of Holocaust victims.

According to local legend, a tree grew from the stake that killed this alleged vampire. In reality, he probably died from influenza.

A stark reminder of the huge nuclear weapons plant that once stood on the site and its effect on the surrounding area.

Massive still life just off the highway in Kansas.

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.

Illegal drag racing two stories beneath Chicago’s streets.

The 606 is a decade in the making.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

A Bibliophile's Dream.

A statue high in a hill that represents how Buffalo Bill got his name.

Hidden amid the tropical forest in the Caribbean Sea are the decaying ruins of the Cocaine King's luxurious island party home.