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This door is one of the oldest in the world located in the Pantheon in Rome, Italy. It was built in the year 118-126 AD, during time of Emperor Hadrian.
The gate consists of two wings, each made of solid bronze, weighs 8.5 tons, measures 7.6m high and 2.3m wide. Although the wings are extremely heavy, they are so balanced that a single person can easily open and close them.
It is also one of few doors in the world whose lock, dating back almost 2000 years, still works
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