1. The Amber Room

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This spectacular room, constructed in Catherine Palace near St. Petersburg, originally had mosaics, carvings and mirrors made with gold, and wall panels made from amber. When the location was taken over by Germany during World War II, the entire thing was deconstructed and the parts taken to Germany. They haven’t been seen since.

2. The Sarcophagus Of Menkaure

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The smallest of the three pyramids of Giza is the pyramid of pharaoh Menkaure, and it once housed a sarcophagus – until it was taken by an English officer and attempted to be shipped to England. Unfortunately, the ship sank – and the ancient Egyptian sarcophagus along with it.

3. Ark Of The Covenant

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The Ark of the Covenant was a chest spoken of in the Hebrew Bibles, said to hold tablets which showed the 10 Commandments. The sacred temple which housed the Ark was destroyed in 587 B.C when Jerusalem was conquered. Nobody seems to know what happened to the Ark of the Covenant.

4. The Honjo Masamune Sword

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This particular sword was said to be made by the greatest sword maker in the history of Japan, named Gorō Nyūdō Masamune. It passed through hands, won during battles, until it was taken by the Americans during the Second World War. The sword was never seen again, speculated to be destroyed, or even still in existence in America.

5. The Lost Library Of The Tsars Of Moscow

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This library was said to contain a huge collection of ancient Greek books and texts written in other languages, before it’s claimed that Ivan the Terrible took over the texts and hid them. Any attempts to find the ‘hidden’ library after this time have failed, and some people believe the library may not have even existed.

6. The Crown Jewels Of Ireland

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The crown jewels of Ireland were originally in Dublin Castle before they were stolen in 1907. They were originally kept in a library, but the security was apparently so bad that the robbery was possible. It’s still not known where the jewels are, or even who managed to steal them!

7. The Lost Poems Of Sappho

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Sapho was a Greek poet, also considered the Shakespeare of her time. Unfortunately, unlike Shakespeare, not many of her works are left! A lot of them disappeared – but in 2014, parts of two poems by Sapho that had never been seen before were revealed, but it’s not exactly certain how they were even found.

8. The Treasure Of A Dead Bishop

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A ship named São Vicente was sailing from Portugal to France in 1357 when it was carrying treasures from a recently-dead bishop of Lisbon, including jewels, gold, silver and tapestries. The ship was attacked by pirates who took the treasure, and one of the pirate ships managed to get away, with no one knowing what has happened to the stolen treasure since.

9. The ‘Just Judges’ Artwork

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Painted by Hubert and Jan van Eyck in Belgium, the ‘Just Judges’ is a panel of artwork which is part of a greater piece named the Ghent Altarpiece. Someone obviously liked this particular panel, because it was stolen in 1934 and hasn’t been found since! The case file for the stolen artwork is still open to this day.

10. The Florentine Diamond

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The Florentine Diamond was a 137-carat yellow jewel, possibly from India before it made its way to Europe. It was once in possession of Emperor Charles I of Austria-Hungary, who placed it in a bank vault in Switzerland after fleeing following the First World War. It was entrusted to an Austrian lawyer, but he was later arrested, and nobody knows what happened to the diamond after that.

11. The Lost Mural Of Da Vinci

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Did you know that Da Vinci painted a mural? It showed the Italian League’s victory over Milan in the Battle of Anghiari, and was painted in Florence’s town hall. The mural then disappeared when the hall was remodelled by another painter. It’s believed that he could have actually just painted over Da Vinci’s mural with his own (the audacity) but researchers have failed to find the original work, and it’s now debated whether he even painted it at all, apparently!

12. A Menorah From The Second Temple

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A menorah (Hebrew candelabra) belonging to the Jewish from their Second Temple was taken by the Roman army when they fought against the Jewish rebels and destroyed the site. It was believed they took the menorah back to Rome, but nobody knows what happened to it since.

13. The Copper Scroll’s Treasure

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One of the famous Dead Sea Scrolls is a copper sheet engraved with text, which talks about the location of further treasure to be found. The Copper Scroll itself is in a museum in Jordan, but nobody knows whether the treasure discussed on the scroll is fake, real or lost. The treasure spoken about is so huge that, if it were to be found, it would be quite the taking!

14. 13 Works Of Art Stolen From The Isabella Stewart Gardner Museum

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Two people dressed up as police officers managed to break into the Isabella Stewart Gardner Museum in 1990 and steal not one, but thirteen pieces of art – worth around $500 million! The paintings were never found, and neither was the identity of the thieves.

15. The Peking Man

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The fossils of a now extinct species, also known as the Peking Man (believed to have lived between 200,000 and 750,000 years ago) were found in a cave near Beijing, but they then disappeared when the Japanese invaded China. The location of these prized fossils is still unknown today.

16. ‘Q Source’ Text

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‘Q Source’ is the name given to a supposed first-century A.D. text that’s said to include sayings relating to Jesus, and some believe that – if the text exists – it was used by writers to create the gospels of Matthew and Luke. But no official copy of Q Source has ever been found, and nobody knows if it ever existed, or if it’s since been destroyed after existing originally.

17. Nazi Gold

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There has been a legend of Nazi gold apparently sunk in Lake Toplitz in Austria by a Nazi officer in order to stop it being taken by Allied forces. There have been searches in the lake for the gold, but nothing has ever been found. That doesn’t mean the gold isn’t there, though, as apparently searching this particular lake is extremely difficult – and dangerous.

18. The Lost Raphael Painting

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This painting is called ‘Portrait of a Young Man’, by Italian painter Raphael, and was owned by a museum in Poland before it was invaded by the Germans. The painting was stolen by the Nazis, and last seen in Germany. The man who had been keeping the painting was sentenced to death for his war crimes, and the painting was never found.

19. Poland’s Royal Casket

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Princess Izabela Czartoryska of Poland created this collection of royal artifacts called the Royal Casket, back in 1800. The artifacts included jewels and works of art. Once again, it was the Nazis who seized this treasure when they invaded, and the treasures of the casket have since been lost.

20. Shakespeare’s ‘Love’s Labour’s Won’

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If you’re a fan of Shakespeare, you will have heard of one of his plays called ‘Love’s Labour’s Lost’. So what’s this one? It’s believed that he wrote ‘Love’s Labour’s Won’ as a possible sequel to the other, but there are no copies of ‘Love’s Labour’s Won’ in existence today – which is strange to say that every Shakespeare play is part of most people’s school schedule. But there’s a theory that ‘Love’s Labour’s Won’ could also be ‘Much Ado About Nothing’, though it’s never been confirmed.

21. Gospels From The First Century

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The oldest copies of the Christian gospels date back to the second century A.D, but it’s believed that there may have been gospels dating back to the first century. Scholars found a fragment of the Gospel of Mark which they believed could be a first century text – but this was later disproven, though theories about lost first century gospels still exist.

22. Michelangelo’s Mask Of A Faun

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This is a bit creepy, isn’t it? This marble mask of a faun (half-human, half-goat in mythology) is believed to have been the work of famous Italian artist Michelangelo. The mask was once owned by the Bargello Museum in Florence, but was then stolen and later lost.

23. The Nativity Painting By Caravaggio

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Officially named the ‘Nativity with St. Francis and St. Lawrence’, this painting by Caravaggio was stolen from a chapel in Sicily, Italy. It was never found out who actually stole it, and the painting was never found, either. A replica has since been put back in the chapel in place of the original.

24. The Missing Romanov Fabergé Easter Eggs

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The Russian imperial family had some extra-special Fabergé ‘Easter eggs’ made for them between 1885 and 1916 – a whopping 10 of them. But following the deaths of the Romanov family, some of the original eggs went missing, and are still missing today. Theories range from some being in private collections, to maybe being in the United States.

25. The Jules Rimet Trophy

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This trophy was to be awarded to the winners of the World Cup tournament, first given in 1930, and was then passed from winner to winner. The trophy was made from gold and semi-precious stones, and the rules stated that, if a team won the World Cup three times, they would get to keep the trophy for good. Brazil won for the third time in 1970, so the trophy was shipped off to Brazil – and then stolen, of course. It hasn’t been seen since.

26. The Treasures Of Nimrud

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Nimrud, an ancient city in modern-day Iraq, housed many treasures, but since the city has been attacked by the terrorists known as ISIS – including parts of the city being blown up or bulldozed – many treasures of Nimrud have been destroyed or damaged.

27. The Lost Camera Of Mallory And Irvine

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George Mallory was a British explorer who, with fellow explorer Andrew Irvine, disappeared in 1924 during their attempt to climb Mount Everest. Nobody knows if the pair managed to reach the top before they died. They were carrying a camera with them for their climb, and when Mallory’s body was found, the camera wasn’t there. Irvine’s body was never found, and it’s believed the lost camera would be with him. The film of the camera would be able to reveal whether they actually did make it to the top or not.

28. ‘Leda And The Swan’ By Michelangelo

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The story of Leda and the Swan is one from ancient mythology, where either the Roman god Jupiter or the Greek god Zeus takes the form of a swan to seduce Leda. Michelangelo’s painting is one of many renditions of this story, but his original painting was lost. One theory is that, because the painting is more on the erotic side, it was willingly destroyed.

29. The Lost Film ‘The Life Of General Villa’

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‘The Life of General Villa’ was a film about the Mexican general Francisco Villa. The film including footage of real-life battles, after Villa himself made a contract with the makers of the movie to film him in real battles in exchange for some of the profits. The film was successfully made, but is now lost.

30. The Very First Feature-Length Film

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The world’s very first feature-length movie was called the ‘Story of the Kelly Gang’, and was released in 1906 in Australia. The film was released with great success, but later became controversial because of the criminal gang it showed. The film was then banned in certain places, but it was unfortunately never properly preserved, which means the majority of the film was then lost.