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RankedFacts.com > Blog > Science > Earth > 10 Unbelievable Secret Places You Won’t Find on a Map
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10 Unbelievable Secret Places You Won’t Find on a Map

RankedFacts Team
Last updated: February 15, 2025 11:16 am
RankedFacts Team
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10 Unbelievable Secret Places You Won't Find on a Map
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Ever wondered what secrets lie hidden beneath our everyday world? From ancient burial sites to covert military installations, the world is full of unbelievable secret places. Get ready to explore ten of the most fascinating and well-guarded locations that you won’t believe exist!

Contents
Burial ChamberBasementWarehouseCameroon SchoolsAfghanistan SchoolsJungle HospitalHouseMuseumLaboratoryMilitary Base

Burial Chamber

Who Were The Celts?

In the Danube Plain of southern Germany, archaeologists discovered a secret chamber beneath the Riedlingen burial mound. This mound, dating back to between 620 and 450 BC, was reserved for elite Celts. The damp soil preserved the oak walls, ceiling, and floor for over 2,600 years.

The chamber’s double-thick ceiling was designed to deter thieves, but it was breached. Looters made off with treasures, possibly including a four-wheeled chariot. The chamber also contained skeletal remains of two males and the ashes of a cremated individual. The reconstructed chamber will eventually be displayed in a museum.

Basement

Inside New York City's Most Secret Basement | World's Strangest

Deep beneath New York City’s Grand Central Terminal lies a huge, secret basement. During World War II, this ten-story subterranean chamber was heavily guarded to prevent sabotage by enemy forces.

The Metropolitan Transit Authority’s Daniel Brucker explained that the room housed gigantic rotary converters that powered trains in and out of the terminal. Although these converters have since been replaced by solid-state rectifiers, the basement remains a fascinating piece of history. Even with modern updates, the basement can continue to power all the trains.

Warehouse

Rarely-seen items recovered from Titanic wreckage | BBC News

In a secret warehouse in Atlanta, Georgia, thousands of artifacts from the RMS Titanic are stored. This collection includes items like an alligator-skin purse, perfume bottles, and a dented porthole.

The BBC was given a tour of the facility and shared the stories behind some of these objects. One poignant story recalls Marian Meanwell, a third-class passenger, whose purse contained a photograph, a letter of reference, and her medical inspection card. These items help tell her story and prevent her from being just another name on the list. Other artifacts highlight the luxury and the potential construction flaws that contributed to the ship’s sinking.

Cameroon Schools

Dying to learn: Children face death for going to school in Cameroon

In Cameroon, many schools have been forced to close due to the threat of separatist fighters. Those that remain open often operate illegally, like the one 11-year-old Mackjourney attends in Douala.

A school boycott, enforced through kidnappings, has left 600,000 children without education. Mackjourney now attends a “secret” school, carefully located to avoid detection by authorities. These schools offer a safe haven for children seeking an education amidst conflict.

Afghanistan Schools

Dars: The fight for Afghan girls' education - BBC World Service Documentaries

In Afghanistan, the Taliban forbids girls beyond primary grades from attending school. Defying this prohibition, some girls aged 15 to 19 attend secret schools, risking arrest and beatings for both teachers and students.

One such school has twelve students and replicates a real classroom. Despite the risks, teachers believe that educating girls is worth it. Islamic clergy members have also voiced support for female education, highlighting a growing dissension against the Taliban’s stance.

Jungle Hospital

Myanmar: The Last Hospital - 30 Days in Myanmar with Sky’s Stuart Ramsay

In Myanmar, a secret jungle hospital provides critical care to those wounded in the ongoing conflict since the military seized power in 2021. Operating under blackout conditions due to the surrounding warfare, the hospital is run by Dr. Myo Khant Ko Ko, who moved to the jungle to treat the injured.

The hospital’s location is kept secret to protect it from military attacks, which often disregard international law. The medical staff also fear spies who might reveal their location to the military.

House

A Couple Hide A Big Secret Behind This Garage Door Until The Authorities Discovered Their Scheme

Reeta Herzallah and Hamdi Almarsi in Enderby, Leicestershire, were fined for building a secret house inside their garage. The new residence was hidden by a tall fence and the garage itself, with illegal access from a nearby one-way street.

Despite being ordered to restore the garage to its original condition, they did not comply, leading to legal action. Neither Herzallah nor Almarsi attended court or entered a plea, resulting in fines and legal costs.

Museum

A rare look inside the newly renovated CIA museum

A secret museum in McLean, Virginia, houses 600 artifacts, including a miniature camera that fits inside a cigarette pack and a scale model of Osama bin Laden’s compound in Abbottabad. This model was used to plan the mission in which SEAL Team Six killed al-Qaeda’s founder.

The museum aims to educate CIA officials about the agency’s history, both successes and failures. The CIA also plans to share coded images on social media to engage the public in unscrambling them.

Laboratory

Porton Down: Britain’s Secret Nerve Gas Lab

Located 5 miles outside Salisbury, in Wiltshire, England, Porton Down is the UK’s top-secret laboratory. Officially known as the Ministry of Defence’s Science and Technology Laboratory, it conducts research on chemical weapons and deadly diseases like Ebola and anthrax.

The UK assures compliance with the Chemical Weapons Convention but produces small amounts of chemical and biological agents to develop medical countermeasures. Porton Down also uses animals for testing but aims to reduce these experiments, potentially through the use of humanoid robots like Porton Man.

Military Base

The Nuclear City Lost Under Ice | Camp Century

Hidden deep beneath the Greenland Ice Sheet, a defunct military base known as Camp Century remained unknown until cryospheric scientist Chad Green spotted it from his aircraft. Built in 1959, this network of 21 tunnels served as both a U.S. Army Corp of Engineers facility and the home of Project Iceworm, intended to store nuclear missiles aimed at the Soviet Union.

Project Iceworm was abandoned due to the ice sheet’s instability, but the base remains a potential threat. Climate change could erode the ice, leading to the release of nuclear waste, diesel fuel, and other hazardous materials into the environment.

From ancient burial chambers to covert military installations, these secret places reveal the hidden layers of our world. Each location holds unique stories and mysteries, showcasing the incredible lengths humans go to protect or conceal certain aspects of our past and present.

What do you think about these hidden locations? Leave your comment below and share which secret place you found most fascinating!

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TAGGED:covert operationshidden locationshistorical sitessecret placesunbelievable secrets

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