The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

Mysterious 500-year-old tapestries depict a unicorn hunt.

A semi-scholarly approach to sex.

A curious collection dedicated to human and animal anatomy and pathology.

Museum preserving torture methods from the past.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

The site of the climactic scene from the classic horror film is now a historic landmark.

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

A statue in the heart of Edinburgh honors a bear that served in the Polish military during World War II.

A book bound in the skin of an infamous criminal, along with countless other specimens.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

The fountain marks the area where hundreds of accused witches were burned at the stake.

A 18th century graveyard and its astonishing cortege of macabre iconography.

Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

A collection of artworks exclusively created by the mentally ill that was almost burned by Nazi culture police.

After years of being casually peed on by humans, this tree is peeing back.

A fearsome dragon clings to a corner of Munich's city hall.

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

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

The patron saint of spinsters grasps a container of dried blood.

A stairway to heaven, or to nowhere at all.