- [Narrator] The densely packed cities of Europe
have long had issues with burial space.
In Paris, bodies were piled on top of bodies,
while bones not yet stripped of flesh
were dug up and stuffed into buildings.
The contents of one cemetery even burst into nearby cellars.
Officials eventually closed the cemeteries
and had their contents dug up and transferred
to mining tunnels beneath the city.
There, the bones were neatly sorted for efficient storage.
Today, the Catacombs of Paris contain
an estimated six million bodies.
Guided tours are available, however, it's fairly common
for people to access the catacombs illegally and some
have even died after becoming lost in the maze of bones.
Starting in the 1960's, The Prehistoric Forest
in Irish Hills, Michigan, offered visitors
a woodland safari filled with fiberglass dinosaurs,
mammoths and other extinct creatures.
The park closed in 1999 and it's changed hands
several times, however, no one has actually done anything
with it, the dinosaurs remain,
but in increasingly poor condition.
Many have been spray-painted, knocked over,
broken, and even stolen by pranksters.
Others have been worn down by the elements.
And the surrounding foliage has been steadily
engulfing what's left.
In an attempt to remind believers of the transitory
nature of life, a 16th century Franciscan monk
built the chapel of bones in Portugal.
The walls and support pillars are covered in
neatly arranged skulls and long bones harvested
from approximately five thousand previously buried monks.
Slightly less aesthetically pleasing, are the two
poorly mummified corpses, one of which
is a child, hanging from the ropes.
Muynak, Uzbekistan used to be a prosperous city
housing tens of thousands of people supporting themselves
with industrial fishing and canning.
Today, Muynak is miles from any coast.
In the 1950's, aggressive Soviet agricultural projects
began diverting so much water from the Aral Sea
for irrigation, that it has all but vanished.
Most of the residents have left, but the buildings
they left behind are not the creepiest part of Muynak.
Numerous rusting fishing boats now rest on desert sand,
the sea having drained away beneath them.
A church was built in the center of an established
cemetery in Sedlec in what is now the Czech Republic.
Many skeletons were exhumed during construction
and others were regularly removed
to make room for the newly dead.
For centuries, these bones existed in heaps in the
Sedlec Ossuary beneath the church.
In 1870, Franti■ek Rint was hired to bring order to all
the bones, which come from about 40 thousand people.
What he created was artwork, albeit macabre art.
The centerpiece is a gigantic skeletal chandelier.
Other touches include Rint signing his name into the bone.
Pripyat, Ukraine was once home to 50 thousand people,
many associated with the nearby Chernobyl nuclear
power plant, when one of their reactors melted down in 1986.
Residents were quickly evacuated with little time to pack.
The government continues to forbid anyone from living there
and permission must be granted for anyone to visit.
Those who do will find decaying buildings,
abandoned toys, a rusting amusement park,
child-sized gas masks, and more.
You have to be dedicated to visit the
Actun Tunichil Muknal Cave in Belize.
Travel includes a long walk through the jungle
and a swim before reaching your destination.
The cave is a thousand year old Mayan sacrificial center
bearing 14 skeletons, from small children to adults.
There's suspicion that some of the victims
were even bound and tortured.
The most well known skeleton is that of the Crystal Maiden.
Centuries of flooding have deposited
a thick coat of calcium over her bones,
giving them a crystalline appearance.
She is cemented to the floor by these deposits.
She appears to have been roughly dropped rather than placed
in a ceremonial position, suggesting she may
have suffered a particularly brutal death.
According to Julian Santana Barrera,
the body of a small girl washed up on the shore
of the Island of Dolls in Mexico.
A doll also washed up and out of respect,
he hung it from a tree.
Over time, he hung more and more dolls, believing they
possess the spirits of other girls.
Now, thousands of dolls and doll parts hang
from the island's trees, slowly decaying
as they're exposed to the elements.
Stories abound about the experiences on the island,
Including hearing the dolls whispering
and seeing them turn their heads.
50 years after Barrera started his project,
he too was found dead, drowned in the same spot
he had originally found the little girl.
Climbing Mount Everest is so dangerous the upper
portion of the mountain is known as the death zone,
where humans can only operate for a very short time
before succumbing to oxygen deprivation.
Almost 300 people have died climbing the worlds tallest
mountain, and the bodies of more than 150 remain.
Bringing bodies off the mountain is dangerous
at best and impossible at worst.
Many climbers have died attempting to bring bodies down,
so those at high altitudes are simply
abandoned for all to see, some are even recognizable
landmarks for experienced climbers.
In 1962, a coal mine beneath the small town
of Centralia, Pennsylvania caught on fire
and it didn't go out, and it hasn't gone out.
Today, that fire still burns and Centralia is abandoned.
The fire has compromised the stability of the town,
with portions periodically collapsing into the mine.
The buildings that once made up the town
have largely been bulldozed, meaning cracked
and overgrown roads run through an empty field.
Stones in this field glow red hot and steam
can be observed rising from the ground.
The area also presents a serious danger
of carbon monoxide poisoning, it's estimated
the fire will last another 250 years.
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