The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

Super-heavy Nazi architectural experiment.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The footprint of a frustrated devil in Munich's Cathedral.

Two stunning 17th-century libraries and a cabinet of curiosities.

A saintly relic hidden in a Prague church basement.

Steadily reminding Czechia of its past.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

Monument to a suicide protesting the Soviet invasion.

The world's largest piece of copyrighted artwork.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

The site of Paul Revere's historic two lantern warning.

A centuries-old church stands as a testament to Boston's "father of architecture."

What was once a true peninsula has now been filled in, causing the water to recede and leaving many streetside "waterfronts" and landlocked "islands."

This headstone marks the grave of an 11-year-old boy killed during clashes in the streets over the boycotting of British goods.

This nearly endless university hallway is home to a unique sunset known as "MIThenge."

Ice cream stand, snack bar, and time capsule of milk conveyance.

Stolen goods adorn the organ at Old North Church.