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The Canton Tower is an observation tower in Guangdong,China.It is the tallest structure in China and fourth tallest freestanding structure in the world.Without people,how long can it last?

200 years after people:The glass has shattered;only the iconic steel frame surrounding the tower remains.But,the leg of the tower cannot hold up the observation pod much longer.Finally,the leg cracks.The pod goes straight down.The hourglass-shaped frame is brought down as well.Soon,China's tallest structure is a pile of rubble.