A Door

The photo above from 1979 shows a Lawrence Livermore National Laboratory employee opening what was thought to be the world’s heaviest hinged door. It was 44 tonnes with a thickness of 2.5 meters and width of 3.6 meters. A special bearing in the hinge allowed a single person to open or close the concrete-filled door.

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However, according to the Guinness World of Records, the world’s heaviest door is in fact the radiation shield door in the National Institute for Fusion Science in Japan. It weighs 720 tonnes, is 11.73 m high, 11.4 m wide and 2m thick.