The nuclear launch codes are the most secretive information of the U.S. government, such that only top officials in the U.S. .
9
Oil deposits location in USA
The reason why the locations are kept a secret is to prevent the rich individuals from purchasing the lands to build their own wells and make big chunks of money from the oil.
8
U.S Medical Secrets
The medical information of patients is to remain classified unless the safety of the patient or the safety of others is involved.
7
The Hapsburg Napkin Fold
In Austria, folding the Hapsburg napkin is a royal act that entails secret guidelines on how to fold the napkin.
6
KFC Recipe
The recipe is a top-world mystery that the organization has figured out how to keep undisclosed since it was set up.
5
Area 51
According to the report by the CIA, Area 51 was created in 1955 for a single purpose, to test a top secret aircraft project, code-named ‘’Aquatone”.
4
Adolf Hitler
The release of the FBI documents clearly shows that Hitler’s suicide was perfectly faked. FBI knew all this but it was kept a secret.
3
HIV/AIDS
Since the 1980s, there has been a lot of debate regarding the origin of HIV and many theories have been formulated.
2
Coca Cola Formulae
It is so highly classified that the organization needed to drop its activity in India since it would have been compelled to give its fixing recipe to the public authority.
1
The afterlife: Heaven and Hell
Heaven and hell is real, and when we die, we all go to either one of them. This is not based on any religion or culture .