The first privately owned air raid shelter in Britain, built after a horrifying night of Zeppelin bombings.

This Welsh village gave itself a ridiculous name in a publicity stunt a century ahead of its time.

A nuclear bunker built to shelter the politicians and important people of Scotland in case of nuclear attack.

This logic-defying 16th-century Tudor manor still stands to the delight and astonishment of onlookers.

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

This series of Scottish caves has no clear purpose other than baffling historians.

Buried five stories underground, this Soviet bunker is packed with gas masks and Cold War paraphernalia.

This disused Cold War bunker has been restored to all of its early 60s glory.

The curious and tiny collection contains some very odd objects.

Hundreds of prehistoric stones, arranged in perfect lines in a French field.

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.

After mysteriously refusing to surrender at the end of World War II this sunken submarine was only salvaged in a search for Nazi gold.