If you are really passionate about the past, discoveries and most importantly, possible theories that can lead to a greater understanding of the world, then old technology that was found will surely satisfy your curiosity. Because of wars, natural disasters and many other factors there are few explanations for what was found and little adaptations in modern languages.

So, here we have a few pieces of technology and discoveries that still remain unexplained!

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This beautiful discovery is called Nimrud Lens and it was found in 1850 in Iraq. This 3000-year-old lens is said to have been used as a telescope lens by the Assyrian people who had an affinity for astronomy.

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Peru, just like the entire South American continent, is a mysterious location. These rocks are arranged in a zig-zag order and they are incredibly heavy. Not even the modern technology can handle them. They are called “The molten rocks of Sacsayhuamán”.

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The Pyramids of Giza are still fascinating structures that make people reflect on the past. The tallest and largest of them all is the Pyramid of Cheops or simply called the Great Pyramid of Giza.

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Costa Rica is full of wonders, including the Stone Spheres that just fascinates people all around the world. It is assumed that these spheres were made in 600 A.D by the Pre-Colombian people.

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The Vikings are known for their outstanding orientation skills and knowledge about the stars when sailing. Naturally, this Viking compass would work just as well as a GPS nowadays. 

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Antikythera Mechanism is one of the most confusing archaeological discoveries to this point. This 2000-year-old invention was found on a Greek ship and archaeologists are trying to give it a meaning ever since.

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The Lycurgus Cup looks like a really sophisticated cup made in our times, but in reality this chalice is an archaeological discovery. This object changes its color depending on the light and also depicts a war scene, more exactly, the defeat of Licinius.

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One of the greatest discoveries of the 20th Century was made in 1974, when some farmers from China accidentally discovered the Qin Shi Huang’s tomb. This tomb is full of a clay army which was presumably made to defend the emperor in the afterlife.

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The Lost City of Atlantis was first described by the Greek historian Plato, who thought that this city held a great naval reign in its time but sunk after a calamity.

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Stonehenge is a very popular attraction to visitors all around the world. This prehistoric monument is known to be approximately 4000-years-old, which means that the people’s craftsmanship of that time was impressive.

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The Nazca Lines are situated in the southern Peru and it proves once again that this country holds a lot of secrets. These lines were first discovered by pilots in the 1920s while flying above the area.

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The Damascus steel is a very interesting discovery. It is one of the strongest materials that was usually used to make knives or swords.

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We can easily state that the Roman concrete made possible the survival of plenty of ancient buildings. The quality of the concrete significantly surpasses the common concrete we have nowadays that lasts no more than 50 years.

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This is one of the discoveries that was highly debated, especially in documentaries. The Shroud of Turin is believed to be the burial material in which Jesus Christ was covered.

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The Copper Scroll is one of the discoveries that need to be solved. It is also believed that the scroll describes a massive gold and silver treasure.

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Archimedes is well known for his revolutionary discoveries in Physics and Mathematics, but his Heat-Ray must be one of his most impressive creations. It was believed that it is made from copper and it reflected the Sun’s rays in an absolutely destructive manner.

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We know the purpose of a violin, but what it will never be discovered is how the Stradivari violins were made.  This process was kept as a family secret by Antonio Stradivari and his sons.

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King Tutankhamun’s tomb and its curse were always a subject that fascinated people. But what is more interesting is in what circumstances King Tut died. Some say he died because of an injury provoked by a chariot accident and some state that he died from an infection.

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The Ark of the Covenant is a wooden chest which contains the stone tables where the Ten Commandments were written.

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What intrigued the scientists and archaeologists when it came to the Voynich manuscript was the language in which it was written. The book is full of symbols and drawings with no possible interpretations.

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In 2003, another discovery baffled the minds of archaeologists. The Hobbit skulls were found on an Indonesian island and they surprise with their small dimensions compared to the normal skull.

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A Chinese repairman was responsible for discovering the Sanxingdui. Then again in 1986, it was the turn for archaeologists to find in the same area two more Bronze-Age sculptures.

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The Mayan Temple is one of the world’s most fascinating places. Also, what intrigues the archaeologists is how did such an advanced civilization, as the Mayans, collapse? Among the possible explanations, the drought seems to be the most plausible.

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This is one of the many discoveries that just baffles archaeologists.  The Big Circles or just simply named “Big Circle” is situated in Jordan and no one seems to know the reason they exist.

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The Holey Jar was discovered in Britain after the World War II and the archaeologists state that its purpose might have been containing small animals like mice or snakes. The jar could have also worked as a lamp.