A bridge which connects Hong Kong with Macau and Zhuhai, is the world’s longest sea crossing.

The Kola Superdeep Borehole was a scientific project undertaken by the Soviet Union in the 1970s to better understand the Earth’s crust.

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.

Antarctic Basecamp, 1911 Tinned ham and whisky are stacked on the shelves beside jars of olives and anchovy paste, awaiting the return of the man who put them there. However, he never would step back into this cosy living space and enjoy the food he had left behind. His name was Robert Falcon Scott – […]

SS Richard Montgomery was an American Liberty ship built during World War II, one of the 2,710 used to carry cargo during the war.

Some 3,000 driving dams once existed throughout New Zealand, with the last built during the late 1930s. As the timber industry dwindled, gradually the dams decayed and disappeared and now only a few remain as relics of this destructive industry.

The Outer Trial Bank is a circular artificial island in the Wash, East Anglia, England. It is one of two islands constructed during the 1970s for a governmental water resources scheme.

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.

Snake Island is one of the deadliest and most restricted places on earth. The island lies off the coats of Brazil and is home to at least 4000 species of the world’s most venomous snakes alleged to possess the ability of melting human flesh. The island is banned to tourists and is only open to scientists for study and research.

Located just over eight hundred kilometers away from the North Pole, the community of Alert, on the northeastern tip of Ellesmere Island, in Nunavut, Canada, is the most northerly permanent settlement in the world.

The island town of Suakin, in north-eastern Sudan, was an important port for trade and culture on the East African coast for centuries.

The stunning tropical islands of Maldives, southwest of India, is known for its sandy beaches and turquoise waters. But very few are aware of its dirty side.

For many years, these bizarre buildings on the isolated southern tip of Marco Island in Cape Romano, Florida, were a bit of a mystery.

Slope Point is the southernmost point of the South Island of New Zealand.

The Haʻikū Stairs, also known as the Stairway to Heaven or Haʻikū Ladder, is a steep hiking trail on the island of Oʻahu.

Holland Island is a marshy, rapidly eroding island once inhabited by watermen and farmers.

Ball's Pyramid is an erosional remnant of a shield volcano and caldera that formed about 7 million years ago.

Khirokitia (sometimes spelled Choirokoitia; Greek: Χοιροκοιτία [çiɾo̞ciˈti.a]) is an archaeological site on the island of Cyprus dating from the Neolithic age. It has been listed as a World Heritage Site by UNESCO since 1998. The site is known as one of the most important and best preserved prehistoric sites of the eastern Mediterranean. Much of […]

Rapa Nui National Park is a national park and UNESCO-inscribed World Heritage Site located on Easter Island, Chile. Rapa Nui is the Polynesian name of Easter Island; its Spanish name is Isla de Pascua. The island is located in the southeastern Pacific Ocean, at the southeastern extremity of the Polynesian Triangle. The island was taken […]

The Great Barrier Reef is the world's largest coral reef system composed of over 2,900 individual reefs and 900 islands stretching for over 2,300 kilometres.

Alcatraz Island is located in the San Francisco Bay, 1.5 miles (2.4 km) offshore from San Francisco, California, United States. Often referred to as "The Rock", the small island was developed with facilities for a lighthouse, a military fortification, a military prison (1868), and a federal prison from 1933 until 1963.

Aogashima is a volcanic Japanese island in the Philippine Sea.

Hashima Island is one among 505 uninhabited islands in Nagasaki Prefecture about 15 kilometers (9 miles) from Nagasaki itself.