The Cambridge pub where Francis Crick announced that he and James Watson had discovered the DNA double-helix.

A quartet of tiled art pieces adorn the floors of this prestigious art museum.

Behind one of the world's most impenetrable vaults is a massive collection of retail silver.

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

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

Huge abstract sculptures of the Puerto Rican Flag.

Cemetery featuring rare glass-fronted columbarium.

A spectacular remnant of an Adler and Sullivan masterpiece that was destroyed in 1972.

A journey begins with a single step, and for many, the road-trip of a lifetime started at this Chicago intersection.

Louis Sullivan’s dark, swirling cast-iron designs envelop a popular department store in this Chicago landmark.

A lone traffic cone perched on a ledge has remained unmoved since at least 2011, unofficially earning the status of a tiny Chicago landmark.

A small Chicago museum filled with thousands of preserved butterflies, beetles, and more.

The 606 is a decade in the making.

Combination beer garden and music venue in the heart of Wicker Park.

An empty bookshelf commemorates the books which were lost during the infamous event

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

A tree-like building perches on its trunk in the Steglitz neighborhood of Berlin.

A thin golden line commemorates the deadliest terrorist attack in recent German history.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

An astonishingly accurate water clock that doubles as an hourly spectacle in this Berlin shopping area.

The world's first clock to use set theory as a measure of time required the invention of a new light bulb just to maintain its obtuse measurements.

Reminders of the Battle of Berlin still scar the railway.

A poignant memorial that traces two hundred years of German history.

Started as a kitchen garden, now the second largest botanical garden in the world.