"What's the Greatest thing in Zimbabwe? A: Great Zimbabwe.  I know what you're thinking, ""The other buildings/art in this era are more impressive.  But, it was built 5,000 miles south of Europe.  It's the second oldest structure in Southern Africa.  It once held 18,000 people.  The walls are built without mortar! So, don't hate on Great Zimbabwe... It was the seat of one of the greatest kingdoms in Southern Africa."
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