Scottish flag, also known as Saltire, dates back to the 12th century. It is made up of a great white cross which spans diagonally across the flag on a blue background. This was the supposed shape of the cross that St. Andrew was put to death on and therefore the flag is also known as the 'Cross of St. Andrew'.

The actual word 'Saltire' means 'a cross with diagonal bars of equal length' and the national flag of Scotland is made up of a white saltire (aka St. Andrews' Cross) on a blue background. First hoisted in 1512, it's believed to be one of the oldest flags in the world still in use today.