Hilltop Crystal Palace Park was created to display Joseph Paxton's behemoth glass-and-iron structure, relocated from Hyde Park after the Great Exhibition of 1851.

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The illusion is only broken when you see behind the wood panelling the iron support structure, embossed with the initials of the London Passenger Transport Board, from whom parts of Tube tunnel were borrowed to build the complex.

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The structure contained the first rolled iron beams, developed and manufactured by Peter Cooper in anticipation of the metal-framed skyscraper.

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The low-slung structure, surrounded by a black iron fence, was once an aircraft parts factory.

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Specifically, what the scientists have found is that the iron adopts a crystalline structure, like a diamond, in the Earth's core.

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It was a departure from the traditional wooden structure and was made of wrought iron, oak, and a man-made product, avonite.

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The remains of the burnt structure are being left for local archaeologists who want to study how the real Iron Age sites would have decayed over time.

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Labour gave a cast-iron guarantee at the last Assembly election that they would retain the current structure of 22 for their entire term of office.

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The main house is the more elevated structure and consists of an open floor plan with French terra-cotta tile floors, custom wrought iron and cathedral ceilings.

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