A hollow cement depiction of time's inexorable effect on the human body.

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

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

An enormous park-like oasis, full of famous Chicagoans' graves.

An antiquated German apothecary on Chicago's North Side.

A Bibliophile's Dream.

A speakeasy takes on Chicago's drinking culture.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

A lush green oasis in the middle of Chicago.

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

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

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

Climb inside an iron crystal magnified 165 billion times its normal size.

Statues of a fire-breather, a clown, and a whole performing troupe celebrate Luxembourg's creative side.

A statue in the center of Dublin dedicated to one of their favorite sons of rock & roll.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

Moscow's other, lesser known kremlin is a fairytale-like cultural complex modeled after Old Russia.

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

Tel Aviv's popular neighborhood went though endless waves of transformation.