The world's largest anatomically accurate brain sculpture.

Tucked away in the forests of Indiana resides an abandoned waterslide that is now a popular graffiti haunt.

A lesser-known part of the Kinsey Institute is this impressive collection of art, artifacts, and material culture related to human sexuality.

Ornate limestone building now filled with geologic specimens, and more.

A stunning, abandoned limestone quarry in southern Indiana provided the stone to erect the Empire State Building.

The first tunnel to be dug beneath a river, repurposed as an art and museum space.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

A glorious pub known for a spiteful printing feud and its famous typeface lost—then found—at the bottom of the Thames.

The bar where "The Great Train Robbery" was planned was once a nexus of high society and low morals.

Pop culture has helped to keep this iconic British building from being destroyed.

Claiming to be the oldest hat store in the world, this historic haberdashery had a hand (and a head) in the creation of the Bowler.

A mysterious pair of mice eating a piece of cheese is London's smallest public sculpture.

The London pub overlooks where the Mayflower was moored before setting sail for the New World.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

An archive of ceramic eggs painted to record clowns' personal makeup designs.

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

Following the trail of an old metro line, this scenic path is haunted by a creepy spriggan statue.

A network of concealed passageways lies within a busy London Underground station.

A clock designed to run with perfect accuracy for 10,000 years.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

A collection of comics, graphic novels, animation and caricatures devoted to exploring this often overlooked art form.

Repository for more than 22 million pickled specimens.

This hidden green space is the city's second largest conservatory.