Astonishing collection of helmets, scientific instruments, and medical models.

Beneath the mossy overgrowth covering this once-sprawling campus lies decades of history and the secrets that come with it.

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

A world-class collection of mechanical musical instruments and automata.

Holding the most bodies of any cemetery in the United States.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

A museum devoted to bringing to light forgotten or neglected histories through exhibitions, education and public programming.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

Become a prohibition rebel.

A veritable variety of odds and ends.

A terrific purveyor of natural history objects and curios.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

The kind of mixed-up place that drives archaeologists crazy.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

Abandoned 19th century homes once occupied by naval officers, soon to be demolished.

The haunting ruins of Jack London's dream house.

Coastal dunes, site of buried Egyptian movie set and former utopian colony.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

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

World's first "penitentiary," meant to be humane, drove men insane.

This fantastical icy castle is built anew every winter.

Home to secret Eastern Bloc spy equipment and the largest stretch of the original Berlin Wall outside of Germany.

A castle hand-built by a Spanish dreamer in the Australian tropical jungle.

This former insane asylum now holds a pathological anatomy museum.