In 1948, a top-secret biological weapons laboratory, nicknamed Aralsk-7, was established here. Until its closure in the 1990s, the laboratory tested some of the deadliest pathogens known to man, including plague, anthrax, smallpox, brucellosis, tularemia, botulinum and Venezuelan equine encephalitis.
The Bastei is a rock formation towering 194 metres above the Elbe River in the Elbe Sandstone Mountains of Germany.
Back in 1941, after Japan’s sneak attack on Pearl Harbor, a retired physician and president of a local tourist club, Charles W. Bressler-Pettis, devised an idea to erect a unique monument in Kissimmee, Florida, that he hoped would inspire American solidarity in response to the attack.
Kaymaklı Underground City is contained within the citadel of Kaymaklı in the Central Anatolia Region of Turkey.
The Waitomo Glowworm Caves attraction is a cave at Waitomo on the North Island of New Zealand, known for its population of glowworms.
The Colosseum or Coliseum, also known as the Flavian Amphitheatre is an elliptical amphitheatre in the centre of the city of Rome, Italy.
In 1959 it was the centre of project Military Atomic Energy Authority operation orpheus investigating the possibility of masking the seismic signal given out by underground nuclear tests.
Inhabited since prehistoric times, Butrint has been the site of a Greek colony, a Roman city and a bishopric.
Ball’s Pyramid is an erosional remnant of a shield volcano and caldera that formed about 7 million years ago.
São Miguel das Missões is a Unesco World Heritage site located in the small town of São Miguel das Missões, in the northwestern region of Rio Grande do Sul state, in southern Brazil.
On the cliff face of a sandstone mountain, visible from the ancient Silk Road near the town of Bamiyan in Afghanistan, are two massive voids left by two monumental statues of Buddha that once stood there.
The Haʻikū Stairs, also known as the Stairway to Heaven or Haʻikū Ladder, is a steep hiking trail on the island of Oʻahu.
In the 1930s, a small town named Agloe suddenly began appearing on the maps of New York. It was positioned near an unmarked dirt road that led from Roscoe to Rockland, and near to Beaverkill.
On the Maryland side of the Potomac River just west of Chesapeake Bay, the largest shipwreck fleet in the Western Hemisphere sits half-sunk and decomposing.
Sachsenhausen was a Nazi concentration camp in Oranienburg, Germany, used primarily for political prisoners from 1936 to the end of the Third Reich in May 1945.
Varosha is located within Northern Cyprus. Prior to the Turkish invasion of Cyprus in 1974, it was the modern tourist area of Famagusta. Its inhabitants fled during the invasion, and it has remained abandoned ever since.
Germany’s “treasure chamber” is located in a disused mine near Freiburg. Documents from over a thousand years of history are stored in the underground archive.
The Post Office Railway, known as Mail Rail since 1987, is a driverless underground railway that was built to move mail between sorting offices.
Teotihuacan was a pre-Columbian Mesoamerican city located in the Basin of Mexico, 30 miles (48 km) northeast of modern-day Mexico City, which is today known as the site of many of the most architecturally significant Mesoamerican pyramids built in the pre-Columbian Americas.
The intense secrecy surrounding the base made it the frequent subject of conspiracy theories and a central component to unidentified flying object (UFO) folklore.