An Escher-inspired library dedicated to the wonders of the human mind, yet closed to the public.

Tucked behind the Institute of Neurological Science down a decrepit street resides the largest display of human brains in Latin America.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

A student driver's nightmare.

Remnants of a Victorian garden feature sitting in public woodland.

The remains of Crystal Palace Great Exhibition of 1851.

London's old-school healing garden.

One of the world's largest collections of pathological specimens.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

Rebuilt remains of a temple to Roman god Mithras.

This South London cemetery holds the remains of more than 15,000 people.

Shiny Brutalist box commemorates a pioneer of electricity and houses a railway transformer.

A friendly pub with a sordid past in cock fighting.

The largest of London's subterranean rivers and once a mad, bad center of London life.

A hands-off space for graffiti artists to hone and display their skills.

A mysterious artist-run cabinet of curiosities and library.

When ecosystems collide in the arid Southwest.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

The largest self-built castle in the U.S., six decades in the making.

“You better take care of me Lord, if you don't you're gonna have me on your hands.” ― Hunter S. Thompson, Fear and Loathing in Las Vegas.

This naturally-sourced hot spring is now home to a clothing-optional resort.

This structure among the trees was the result of divine inspiration.