Passports change in colour and style depending on which country they are from, with alll travel documents colours being either red, green, blue or black.
Depending on the country, they then come in different shades to distinguish them from one another.
Some even have different designs within the pages to show off many of the countries features and iconic images.
Britons are currently debating what the British passport should change to after Brexit, with many wanting to go back to the original navy colour.
They became the well known burgundy colour after joining the EU.
What many may not realise is that all passports around the world are actually the same when it comes to their main design.
The passport design came about in 1920, when it was first invented and was created with the same amount of pages, same shape and design and even same layout throughout all countries.
This was according to the League of Nations after travel restrictions were put in place following the war.
With many travel documents differing in shape and appearance, it made border control much more complicated.
They have now been that way for nearly 100 years, which is now dictated by UN’s International Civil Aviation Organisation (ICAO).
All passports must be 15.5cm x 10.5cm, as well as always having 32 pages, with 28 of them being empty for visas and stamps.
The first four pages must always include the holder’s personal details and photograph.
They must also always be bound in cardboard, with the countries name and logo on the front.
Passports have even been ranked according to how powerful they are regarding travel freedom.
Germany is once again the most powerful passport in the world for the sixth year running with a score of 82.7 per cent.
Sadly British passports came in at 12th, with a score of 79.2 per cent.
The study was undertaken by Dimitry Kochenov, a law professor who said that the British ranking could fall after Brexit has been finalised.
He stated: “The moral is simple: EU citizenship is an extremely valuable resource and getting rid of it—crippling citizens’ horizon of opportunities— should not be taken lightly.”
