The vaults are huge and include three disused wells. In fact, the floorspace is actually larger than that of the City's tallest building, Tower 42. Keys three-feet long are needed to open the gigantic vault doors.
They look ceremonial, like something used for a state occasion, but these keys are in fact entirely functional.
As they are inserted into the locks, the person attempting entry also has to speak a password into a microphone before the vaults are opened.3. Train paper toy by Matt Hawkins for GE. Via.
4. Post-its marking all the deaths in Game of Thrones. Now do the same thing for all the sexual assaults.