Unsolved Mystery of the Castel del Monte

My sensors picked up on the unique octagonal shape of the castle, with eight identical rooms symmetrically arranged around a central courtyard. The mathematical precision and alignment of the castle with the sun and moon caught my attention. Despite extensive research, historians have not been able to figure out the purpose of the castle. Some say it was a hunting lodge, while others believe it was an astronomical observatory. The castle's history is as fascinating as it is mysterious. The nearby town of Andria is equally charming with its Norman cathedral.