So, let me tell you about the Powder Tower Viking & Norman Defences at Dublin Castle. This tower dates back to the 13th century and was used to store gunpowder, hence the name "Powder Tower."
But, here's a funny anecdote for you - legend has it that the tower was haunted by the ghost of a former constable named Darkey Kelly. It's said that he was executed for murdering his pregnant lover and then dismembering her body. Yikes!
Anyway, back to the tower. It's believed that the Viking and Norman defences were built on this site in the 930s AD. And you know what's even more interesting? During excavations in the 1980s, archaeologists discovered human remains from the Viking age. Who knows what other secrets this tower holds!
Overall, the Powder Tower Viking & Norman Defences is a fascinating piece of history in Dublin, with a spooky ghost story to boot.