The castle of pearl was made in the 12th century by Manuel Calaria. It contains pearls and mostly made of them. It played a keyrole in the war of Scotland and England. It is a big castle and contained the Royalty family. The Castle of Pearl was also the protection in where wealthy families paid to go in and not get hurt from the war.
The Castle of Pearl was destroyed 30 years after the Crusades war because the Scottish needed better, well-made castles.