Catch a scenic view of Warsaw's Old Town from the top of a centuries-old dumping ground.

A bronze replica of an elm tree that honors the victims that perished in Pawaik Prison.

These 18th-century paintings of Warsaw were used to reconstruct the city after World War II.

Order “Proletariat’s Cutlet” at this communist-themed restaurant allegedly once visited by Lenin.

This hidden collection of everyday objects illustrates life within communist Poland.

The world’s narrowest house makes for an awkward, four-foot-wide living space.

Dolls of all shapes and sizes display the eras of femininity in this spooky and beautiful collection.

Inside a former cabaret, seven floors of erotic art.

This bridge was constructed from the rubble of the infamous Bastille.

Despite being considered a thoroughly American sport, basketball's oldest surviving playing field is found in the basement of a Paris YMCA.

BDSM, 1930s Style.

An immersive projection art installation uses sound, scale, and light to take visitors inside classic works of art.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

This museum houses an imposing skeleton army comprised of creatures great and small.

A semi-abandoned village destroyed by U.S. bombings during World War II dominates the valley of Turano.

A wunderkammer of curious objects and intriguing art nestled within a hub of ancient Roman sites.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

The graveyard is filled with beautiful funerary art and boasts breathtaking views of Florence.

The middle finger of modernity.

A beloved local artist has been honored with this statue of a man emerging from a toilet.

A museum filled with tiny, adorable versions of the mighty Royal Danish Navy.

The only surviving piece of Copenhagen's 16th-century defensive wall.

Hotel designed by indie graphics artists.

An "evil painter" included pointed symbols in this artwork to poke fun at members of the Danish Parliament.