Daily Star's biggest headlines straight to your inbox!A castle in Italy with a mysterious octagonal shape is rumoured to have secret codes, with many bizarre theories about the number 8 surrounding it.Built in the 13th century, Castel Del Monte (or castle of the mountain) was constructed by the Holy Roman Emperor Fredrick II in South Eastern Italy’s Apulia region.This castle has a distinct style with eccentric features.
It has an octagonal shape, with eight octagonal towers at each corner and there are eight rooms on each of the two floors, reports Mirror.
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