The Metéora is one of the largest and most important complexes of Greek Orthodox monasteries in Greece, second only to Mount Athos.
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.
Five meters below the runway of Sarajevo’s airport runs a short stretch of tunnel that was dug out during the Siege of Sarajevo to bring supplies to the cut-off city. For four years this 800-meter long tunnel was the besieged city’s only connection to the outside world, and its life support.
Auschwitz concentration camp was a network of concentration and extermination camps built and operated by the Third Reich in Polish areas annexed by Nazi Germany during World War II. It consisted of Auschwitz I (the base camp); Auschwitz II–Birkenau (the extermination camp); Auschwitz III–Monowitz (a labor camp to staff an IG Farben factory), and 45 satellite camps.
Belzec was the first of the Nazi German extermination camps created for the purpose of implementing the Operation Reinhard – which entailed the murder of some 2.2 million Jews, during the Holocaust.
Vilarinho da Furna, in the municipality of Terras de Bouro in the Braga district, in northern Portugal, was an old village that was erased from the map in 1972.
Janowska was a Nazi German labor, transit and concentration camp established September 1941 in occupied Poland on the outskirts of Lwów (Poland, today Lviv in Ukraine).
The Acropolis of Athens is an ancient citadel located on a high rocky outcrop above the city of Athens and containing the remains of several ancient buildings of great architectural and historic significance, the most famous being the Parthenon.
Christ of the Abyss is a submerged bronze statue of Jesus Christ, the original of which is located in the Mediterranean Sea off San Fruttuoso between Camogli and Portofino on the Italian Riviera.
Dachau concentration camp was the first of the Nazi concentration camps opened in Germany, intended to hold political prisoners.
The Stelling van Amsterdam was the most advanced military structure of its type in the world – 135 km (84 miles) of forts, batteries and moats completely encircling the city in a defensive barrier.
Craco is an abandoned comune and medieval village located in the Region of Basilicata and the Province of Matera in Italy.
The Russian Woodpecker was a notorious Soviet radio signal that could be sporadically heard on the shortwave radio bands worldwide between July 1976 and December 1989.
The Cultybraggan camp is one of the last remaining World War 2 Prisoner of War Camp in the UK.
The Post Office Railway, known as Mail Rail since 1987, is a driverless underground railway that was built to move mail between sorting offices.
The Chernobyl Nuclear Power Plant is a decommissioned nuclear power station near the city of Pripyat, Ukraine. Reactor 4 was the site of the Chernobyl disaster in 1986 and the power plant is now within a large restricted area known as the Chernobyl Exclusion Zone.
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.
Treblinka was an extermination camp, built by Nazi Germany in occupied Poland during World War II.
About twenty kilometers from the city of Boulogne-sur-Mer, near the hamlet of Mimoyecques, in northern France, lies a once-secret underground Nazi base.
Grüner See (Green Lake) is a lake in Styria, Austria near the town of Tragöß. The lake is surrounded by the Hochschwab mountains and forests.