A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

This museum houses an imposing skeleton army comprised of creatures great and small.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

Surreal riveted sea forts once protected the Kent shores from German attack.

A perilous medieval road leading right into the sea.

A spooky juxtaposition of caves and graves gives this legend-filled cemetery a particularly haunting vibe.

These 90-year-old murals of local kings, Vikings, and outlaws hide in plain sight in a beautifully baroque shopping arcade.

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

The Birthplace of the Englishman who founded the A.C. Milan football club.

This unchanged Victorian park is rumored to have been the inspiration behind Peter Pan's Neverland.

A little slice of Japan and its aesthetics in London's Holland Park.

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

An small and easily overlooked archaeology museum chock full of Egyptian artifacts.

Abstract dinosaur models in London.

Scattered throughout London are ancient remnants of the city's former bounding wall.

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

The remains of Crystal Palace Great Exhibition of 1851.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

The site of London's first coffee house has been serving refreshments of one kind or another for 360 years.

The anatomical-pathological collection of a man who changed surgery.