It's now a busy factory churning out one of Northern Ireland's most iconic snacks. Since 1956, the Tayto Group has produced potato chips (or "crisps," as the locals say) inside this castle ...

Fly over the rugged beauty of Northern Ireland with breathtaking drone footage ... and the historic charm of Carrickfergus Castle. For more videos like this, don’t forget to Like and Follow!

They intended to stay here for good ... There are over 40 castles in Northern Ireland that you can go and see and learn about. It wasn’t just the Normans who build castles on this island ...