Passports from most countries are rather common, as they're handed out based on citizenship, but there is one that has a different requirement and is the rarest in the world.
It's given only to the select members of the Sovereign Military Order of Malta, a Catholic order known for its charitable works.
But if you want to get your hands on one, you may be in for a bit of a battle.
What's more, holding this exclusive passport may actually put you at a disadvantage in some countries.
Find out more in the video above.