Castel del Monte is situated on a small hill close to the monastery of Santa Maria del Monte (Italy), at an altitude of 540 m.

Castel del Monte (Italian: Castle of the Mount) is a 13th century castle situated in Andria in the Apulia region of southeast Italy. It was built by the Holy Roman Emperor Frederick II some time between 1240 and 1250; it has been despoiled of its interior marbles and furnishings in subsequent centuries.

It has neither a moat nor a drawbridge and might in fact never have been intended as a defensive fortress.


The fortress is an octagonal prism with an octagonal bastion at each corner. Each floor has 8 rooms and an eight-sided courtyard occupies its centre.

The octagon is thought to be an intermediate symbol between a square (representing the earth) and a circle (representing the sky). Frederick II may have been inspired to build to this shape by either the Dome of the Rock in Jerusalem, which he had seen while on Crusade, or by the Palace Chapel of Aachen Cathedral.

The main wall is 25 m high and the eight bastions each 26 m. The sides of the main octagon are 16.5 m long and those of the octagonal towers each 3.1 m. The castle has a diameter of 56 m. Its main entrance faces due east.

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