1. Vatican Secret Archives
You can go to Vatican everywhere except Vatican Secret Archives. Vatican Library has centuries of hidden secrets. The Pope owns these archives until his death and of course they are passed on to the next Pope. Only pope are allowed to visit & browse the Secrets.
2. Lascaux Caves – France
Lascaux is famous for its Palaeolithic cave paintings, found in a complex of caves in the Dordogne region of southwestern France, because of their exceptional quality, size, sophistication and antiquity. Estimated to be up to 20,000 years old, the paintings consist primarily of large animals, once native to the region. Lascaux is located in the Vézère Valley where many other decorated caves have been found since the beginning of the 20th century. To preserve the antiquity Only a handful of people are ever allowed inside.
3. Moscow Metro-2
Metro-2 in Moscow, Russia is a purported secret underground metro system which parallels the public Moscow Metro. The system was built supposedly during (or from) the time of Stalin and codenamed D-6 by the KGB. Russian journalists have reported that the existence of Metro-2 is neither confirmed nor denied by the Federal Security Service of the Russian Federation (FSB) or the Moscow Metro administration.
4. Ise Grand Shrine
The inner shrine is believed to date from the 3rd Century and enshrines the sun goddess Amaterasu. You can only see part of the main shrine buildings as they are almost completely hidden from view behind wooden fences. The inner sanctum can only be entered by members of the imperial family and a few select shrine priests. It is such a holy site that the head priest or priestess must come from the imperial family.
5. Mezghorye, Russia
Mezhgorye is a closed town in the Republic of Bashkortostan, Russia. It is believed that people living in the town work on highly-classified secret work around Mount Yamantaw, which has been suspected to be the location of a nuclear program, a repository of Russian treasures, a bunker in case of war or a huge warehouse of coal. But really, nobody knows as only few classified people can enter the town.
6. Room 39, North Korea
thing that remains a bit of a mystery is what goes on inside the North Korea as data isn’t readily available or reliable. Now imagine trying to get into Room 39, a secretive North Korean government facility home to several illegal operations including Money Laundering, production & Smuggling of drugs and weapons Sale. Many claim that Room 39 is critical to Kim Jong’s continued power, enabling him to create fund to buy political support and nuclear weapons program.
7. Area 51 Nevada
Probably the worst kept secret, Area 51 is the alias for a military base that is located in Nevada – an Air Force base about 150 miles from Las Vegas. It is belief that the remains of crashed UFO spacecrafts are stored at Area 51 where government scientist’s reverse-engineer the aliens’ highly advanced technology.Fodder for this has come from a variety of supposed UFO sightings in the area and testimony from a retired Army colonel who says he was given access to extraterrestrial materials gathered from an alien spacecraft that crashed in Roswell, N.M. The government’s official line — that the details of Area 51 are classified for purposes of national security. Nobody Knows what is going inside Area 51.
8. Church of Our Lady Mary of Zion
The Ethiopian Orthodox Church claims to possess the Ark of the Covenant in a chapel in the small town of Axum, in their country’s northern Highlands. It arrived nearly 3,000 years ago, they say, and has been guarded by a succession of virgin monks who, once anointed, are forbidden to set foot outside the chapel grounds until they die. No one except the Guardians are ever allowed to see the Ark, not even the Patriarch of the Church.