This bizarre megalithic structure is the work of Florida man Edward Leedskalnin, who built the entire complex on his own in the 1930s. Leedskalnin claimed to have invented a "perpetual motion holder" that allowed him to move the huge stones using levitation. A few teenagers claimed to have seen him working, and said that the vast blocks of coral had bobbed around "like hydrogen balloons". Whoa.
Cicada 3301 is a deeply strange and cryptic organisation that has been posting complex and eerie puzzles on the internet since 2012. It has been called "the most elaborate and mysterious puzzle of the internet age", and quite a lot of people think it might be the work of the NSA or CIA; an attempt to recruit members of the public to work on codebreaking and hacking projects. Cool.
3. The Nibiru Cataclysm
Many conspiracy theorists believe our solar system is hiding a 10th planet called Nibiru, that it's about to collide with Earth and kill us all, and that NASA is covering it all up (which scientists deny). In 2012, Professor Brian Cox tweeted "if anyone else asks me about that imaginary bullshit planet I will slap them around their irrational heads with Newton's Principia." Bet it's true and he's part of the cover-up.
Utsuro-bune literally means "hollow ship" in Japanese, and describes a strange vessel made from polished brass and crystal that washed ashore in 1803 on the eastern coast of Japan. Local fishermen found an attractive, strange-looking young woman inside the ship, but she didn't speak any language they had ever heard. Ufologists believe it to be an early close encounter with an alien species.
5.The Lizard Man of Scape Ore Swamp
The creature in this photo is allegedly the "Lizard Man" of Scape Ore Swamp in South Carolina, which is said to live in the surrounding swampland and also sewers. It's described as being around 7 feet tall, bipedal, and scaly, with three long fingers on each hand. It's alleged to have attacked cars, leaving long gouges in the metal, and let's be honest: It's definitely the Demogorgon from Stranger Things.