Unknown World

The Wolf’s Lair

This Nazi ruin was the site where Hitler was almost blown up by a suitcase bomb.

The Land of Open Shutters

Situated In The Rural Part of Eastern Poland, the Land of Open Shutters is a rustic, traditional place that is rarely visited by outsiders and where the locals seldom leave.

Bodie Ghost Town

Bodie is a ghost town in the Bodie Hills east of the Sierra Nevada mountain range in Mono County, California, United States about 75 miles (121 km) southeast of Lake...

Alnwick Poison Garden

Behind big black gates, the carefully curated garden contains about 100 legendary killers like Atropa belladonna (deadly nightshade), Strychnos nux-vomica (strychnine), and Conium maculatum (hemlock). Guides explain their deadly properties while keeping ne’er-do-wells and curious children away from the plants, warning them: “Do not touch any of the plants, don’t even smell them. There are plants here that can kill you.”

Eastern State Penitentiary

The Eastern State Penitentiary, also known as ESP, is a former American prison in Philadelphia, Pennsylvania. It is located at 2027 Fairmount Avenue between Corinthian Avenue and North 22nd Street in the Fairmount section of the city, and was operational from 1829 until 1971.

Gulliver’s Travels Park

The park was built next to Mount Fuji near Aokigahara - Japan’s famous ‘suicide forest’ - and close to the former headquarters of Aum Shinrikyo, the religious cult responsible for 13 deaths in the Tokyo sarin nerve gas attack of 1995.

Mirny Diamond Mine

The Mir mine, also called the Mirny mine, is an open pit diamond mine located in Mirny, Sakha Republic, in the Siberian region of eastern Russia. The mine is >525 meters (1,722 ft) deep (4th in the world) and has a diameter of 1,200 m (3,900 ft), and is one of the largest excavated holes in the world.

Peenemünde Army Research Center

The research and development carried out in Peenemünde was not only crucial to the course of WWII, but impacted the future of weapons of mass destruction, as well as space travel.

Kinzua Bridge

The Kinzua Bridge or the Kinzua Viaduct was a railroad trestle that spanned Kinzua Creek in McKean County in the U.S. state of Pennsylvania. The bridge was 301 feet (92 m) tall and 2,052 feet (625 m) long. Most of its structure collapsed during a tornado in 2003.

Borovsko Bridge

The Borovsko Bridge is an unfinished highway bridge near Borovsko , part of Bernartice municipality, Central Bohemian Region, Czech Republic. It is commonly known as the "Czech Avignon" or "Hitler's Bridge".

Željava Air Base

Situated in the west of Bosnia on the border with Croatia, Objekat 505, as it was officially known, was the largest underground airport in the Balkans. The primary purpose of the Objekat 505 was to house a long-range radar early warning system, akin to NORAD, as well as to provide a strategic command center for the country’s defense.

Juragua Nuclear Power Plant

Juragua Nuclear Power Plant was a nuclear power plant under construction in Cuba when a suspension of construction was announced in 1992 following the collapse of the Soviet Union and the termination of Soviet economic aid to Cuba.

Barbados HARP Gun

The Barbados HARP Gun, was part of Project HARP, short for High Altitude Research Project, which was a joint project of the United States Department of Defense and Canada's Department of National Defence created with the goal of studying ballistics of re-entry vehicles at low cost; whereas most such projects used expensive and failure-prone rockets, HARP used a non-rocket spacelaunch method based on a very large gun to fire the models to high altitudes and speeds.

Prora

Prora, also known as the Colossus of Prora, is an enormous building complex on the island of Rügen, Germany, that was built by Nazi Germany between 1936 and 1939 as a beach resort of the Strength Through Joy (Kraft durch Freude or KdF) project.

Presidio Modelo

Presidio Modelo (Model Prison) was a former “model prison” of Panopticon design, located on the Isla de la Juventud in Cuba, built between 1926 and 1931, during the repressive regime of Gerardo Machado.

Vajont Dam

The Vajont Dam (or Vaiont Dam) is a disused dam in Italy, which was completed in 1959. On 9 October 1963, during initial filling, a massive landslide caused a man-made megatsunami in the lake in which 50 million cubic metres of water overtopped the dam in a wave 250 metres (820 ft) high, leading to 1,910 deaths and the complete destruction of several villages and towns.