Top 10 Remote and Enigmatic Landmarks with the Outside World

Coca-Cola is one of many popular beverages made from coca with medicinal properties and health benefits; initial marketing materials claimed that Coca-Cola soothes headaches and acts as a 'brain and nerve tonic.' Coca-Cola inventor John Pemberton is known to have shared his original formula with at least four individuals before he passed away in 1888. In 1919, Ernest Woodruff led a group of investors to buy the company from Candler and his family.

To secure the loan for the acquisition, Woodruff placed the only written copy of the Coca-Cola formula in a vault at the Guaranty Trust Company of New York. In 1925, when the loan was paid off, Woodruff transferred the written formula to the Trust Company Bank in Atlanta. On December 8, 2011, the company placed it in a vault within the grounds of the World of Coca-Cola in Atlanta. According to the company, only two employees have ever known the complete formula at any time, and they were not allowed to travel together. When one dies, the other must choose a successor within the company and pass on the secret. The identities of the two employees who own the secret have themselves been a secret.

A colossal surreal mountain atop a flat summit is deemed one of the most mysterious mountains, with countless rare plant and animal species that are hard to find anywhere else on planet Earth. The highest mountains of the Pakaraima range, running through Venezuela, Brazil, and Guyana, constitute a plateau of sedimentary rocks bordering the Amazon River basin. Mount Roraima is among the oldest geological formations on Earth, with its tepuis estimated to be over 2 billion years old. The tallest tepui plateau, Mount Roraima, is renowned for its prehistoric ecosystem, sustaining plant and animal species found nowhere else in the world.

Mount Roraima is a remarkable flat-topped mountain surrounded by towering vertical cliffs, forming a floating island in the sky over the Gran Sabana (Great Savannah), a vast region of southeastern Venezuela. This mountain is the highest peak in the Pakaraima tepui chain in South America. This unique table-top mountain summit is a prehistoric island. The Roraima mountain summit stretches over 10km in length, with a maximum width of 5km, covering an area of about 33 to 50 square kilometers, rising over 2200 meters in height, with an average elevation of 2600–2700 meters. Its sheer cliffs make access extremely challenging.

Queimada Grande, also known as Snake Island, is an offshore island in the Atlantic Ocean off the coast of Brazil. It is administered as part of the municipality of Itanhaem in the state of Sao Paulo. This island is small in area, only 43 hectares, and has a mild climate. The terrain of the island varies considerably, from bare rock to tropical forest. This island is the sole natural habitat of the critically endangered species, the Bothrops insularis (golden lancehead viper). These snakes became trapped on the island thousands of years ago after the last Ice Age ended when rising sea levels severed the island's connection to the mainland. Evolutionary pressures subsequently allowed the snake species to adapt to the new environment, their numbers increased rapidly, making the island hazardous for visitors.

Queimada Grande is closed to the public to protect both humans and the snake population; access is restricted to the Brazilian Navy and selected researchers appointed by the Chico Mendes Institute for Biodiversity Conservation. It is off-limits to the public to safeguard human and snake lives. According to some estimates, with one snake per square meter, there is intense competition for resources. The island was previously believed to have around 430,000 snakes, but recent estimates are much lower. This island is also home to a small number of Dipsas albifrons, a non-venomous snake species.

North and South Brother Islands are a pair of small islands located in the East River of New York City between the Bronx mainland and Rikers Island. North Brother Island was once the site of Riverside Hospital. Riverside Hospital was established in the 1850s under the name Smallpox Hospital with the purpose of treating and isolating victims of that disease from the outside world. Its mission eventually expanded to include other quarantineable diseases, initially typhoid fever, then smallpox, and tuberculosis. During the polio epidemic of 1916, Riverside Hospital treated many patients.

This North Brother Island has long been privately owned but was repurchased by the federal government in 2007 with some funding from The Trust for Public Land and other organizations; both were handed over to the city. They were subsequently designated as a sanctuary for waterfowl. The island is the site of the General Slocum disaster, a steamship that caught fire on June 15, 1904: 1,021 people perished in the fire on the ship or drowned before the vessel washed ashore the island's coast. Currently, the island is used as a sanctuary for herons and other waterfowl species, the island is currently uninhabited and off-limits to the public.

Named after the Norse fire god Surtur, Surtsey is one of the newest islands in the world. In November 1963, Surtsey was formed in a volcanic eruption that thrust it above the surface of the water 18km southwest of Heimaey; 32km off the southern coast of Iceland. When the eruption first occurred, ash columns nearly 9,146 m high shot into the sky and could be seen on clear days as far away as Reykjavik. In 2008, Surtsey was inscribed on UNESCO's World Heritage List, as a prominent example representing significant ecological and biological processes underway.

Surtsey is one of the most extensively filmed and studied islands, as well as one of the most restricted. Since its creation, the island's development has been studied by volcanologists, botanists, and biologists. Surtsey is providing scientists with a unique and fascinating insight into how a new island develops, how plant and animal communities evolve; how life colonizes new land. Due to the need to allow natural processes to unfold without human interference, very few people are permitted to set foot on the island. Special permits are granted only for scientific research.

The Bermuda Triangle is a legendary part of the Atlantic Ocean bounded by Miami, Bermuda, and Puerto Rico, where dozens of ships and aircraft have vanished. The Bermuda Triangle is perhaps the most famous mystery spot in the world. This area covers approximately 500,000 square miles located in the Atlantic Ocean between Bermuda, Puerto Rico, and Miami, Florida. Over 20 aircraft and 50 ships are said to have mysteriously disappeared or crashed without explanation. The Bermuda Triangle has captured the human imagination with unexplained disappearances of ships, aircraft, and people.

Some speculate that mysterious and unknown forces are responsible for the unexplained disappearances, such as aliens abducting humans for research; the influence of the lost continent of Atlantis; vortices sucking objects into alternate dimensions; and other speculative or alternative theories. Although countless fanciful hypotheses have been proposed regarding The Bermuda Triangle, no theory has proven that mysterious disappearances occur there more frequently than in other well-traveled areas of the ocean. The ocean always remains a mystery to humans, and when bad weather or poor navigation is involved, it can be a very dangerous place.

The Air Force facility commonly known as Area 51, located within the Nevada Test and Training Range, has captivated imaginations of conspiracy theorists and Hollywood filmmakers alike for decades. Area 51 gets its name from old maps of the Nevada Test Site that identified the area around Groom Lake as being Area 51, the literal 51st area among many areas making up the military base. This top-secret military base still operates shrouded in desert secrecy, with myths surrounding its stealth aircraft testing during the Cold War leading to rumors of UFOs and aliens, US government experiments, and even a staged moon landing at the facility.

Since the 1950s, when locals and tourists to this area of the Silver State began spotting secretive aircraft, built with unprecedented technology, soaring at high speeds. While it has never been declared the “top-secret base,” Area 51 remains heavily guarded and restricted for both ground and air use. Other famed aircraft tested at Area 51 include the Archangel-12, the stealth fighter F-117 Nighthawk, and even the SR-71 Blackbird. Curious onlookers can explore the surrounding area of the base, which has become an oddly intriguing tourist destination, though they are not permitted inside.

Mount Ijen is an active volcano located in East Java, Indonesia. Kawah Ijen is situated near the coastal town of Banyuwangi, at the eastern end of Java Island. The lake atop Mount Ijen is the largest acid lake in the world and it's also famous for a phenomenon called the 'Kawah Ijen blue fire,' where you can see blue flames burning like molten sulphur in the darkness! The active volcano crater at Kawah Ijen has a diameter of 722 meters and a surface area of 0.41 square kilometers. It is 200 meters deep and has a volume of 36 hectometres.

The Kawah Ijen acid lake is both terrifying and spectacular due to a rare natural phenomenon occurring here. The blue flames are sulphur gas burning explosively through the rocky surfaces around the lake, emanating from cracks at temperatures up to 600 °C. The flames seem to ignite streams of molten and blue sulphur flowing down the mountain like electric-blue molten lava. The flames can reach up to five meters, with some of the gas condensing into liquid, flowing down the slope with a spectacular blue light and still burning. Ijen is the largest blue flame area in the world. Witnessing a primitive demonstration of nature's power will leave you in awe, you won't be able to approach this site due to its heat and danger.

Beyond being the coldest and driest place on Earth, the Antarctic also hosts a strikingly red waterfall called Blood Cascade streaming down 5 tiers along a stream of white ice. Blood Cascade is a flow emanating from the tongue of Taylor Glacier onto the ice-covered surface of Lake Bonney in Taylor Valley of the McMurdo Dry Valleys in Victoria Land, Antarctica. Unlike most Antarctic streams, Taylor Glacier's flow isn't frozen to its bedrock, possibly due to the presence of concentrated salt from ancient seawater trapped beneath it.

Scientists eventually determined that the gruesome color comes from salty, iron-rich water within the glacier oxidizing and rusting upon exposure to oxygen. The iron-rich hypersaline water occasionally emerges from small fissures in the glacier layers. The saline source is an underground reservoir of unknown size covered by about 400 meters of ice located a few kilometers upstream from its outlet at Blood Cascade.

The Yonaguni Monument, or Remnants as it's sometimes called, lies at a depth of 10 to 15 meters, an area occasionally affected by strong currents. Entry to the site through a small tunnel opens into a flat, square-shaped area. In front of you stand two gigantic pillars, perfectly squared with sharp edges, rising above the water's surface. From here, you traverse a flat 'pathway' around the towering walls of the monument to reach an area resembling a terrace. Whether you believe this to be a man-made structure or a result of natural rock formation, it remains a breathtaking sight and a mysterious place to humankind.

There are large stairways leading up to the terrace of the Yonaguni Monument and several more leading to higher levels of the structure. At the edge of the stage, the walls drop about 20 meters. Further away is another nearly symmetrical structure resembling a giant turtle. The straight edges of the staircases and stage form perfect 90-degree angles. Geologists argue the rock formations are sedimentary strata. Archaeologists assert the monument is carved from rock. But if this monument were built on land and then submerged by the sea, it must have occurred over 10,000 years ago, the last time sea levels rose. That means it predates the Egyptian pyramids and megalithic structures like Stonehenge by about 5,000 years.