At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

An antiquated German apothecary on Chicago's North Side.

Internationally known record store and purveyor of "dusties."

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

The 606 is a decade in the making.

A Bibliophile's Dream.

A haunting statue called "Eternal Silence" has quite the reputation among visitors with active imaginations.

Nonprofit art center that promotes outsider, intuitive, and self-taught art.

A science teacher's dream.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

A speakeasy takes on Chicago's drinking culture.

A monument to the art of slicing people open.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

This museum looks at the history of one of America's most famous prisons and most beloved albums.

This micro-nation may be some sort of prank, but its constitution sure seems official.

An underground city of salt.

Rusty industrial city full of oxidized distillation towers.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Celebrated example of Ottoman architecture that also served as a site for brutal massacres.

This museum preserves the hand-dug tunnel that kept Sarajevo afloat during the Serbian siege.

Oriental bazaar in the heart of Sarajevo.

This historic timepiece is thought to be the only public clock in the world that keeps lunar time.

A number of craters left by fatal mortar strikes have been filled with red resin to remember those lost during the Siege of Sarajevo.