6. Granite Mountain Records Vault, United States
While most of us are aware of the Mormon religion and its beliefs, it isn’t widely known that the Church of Jesus Christ of Latter-Day Saints possesses one of the most extensive databases on the human race in the world. In the Little Cottonwood Canyon just outside of Utah, approximately 2.4 million genealogical microfilm rolls are stored in the religion’s Granite Mountain Records Vault, carved deep into a mass of solid rock. In simpler terms, these film rolls equal about three billion pages of family history records. A 14 ton door protects this information, which raises questions as to how the religion accessed these records and what their use for them is. The vault has long been rumoured to host secret underground baptisms and religious rituals too.