• The Giant Pyramid?
  • Sears Tower?
  • "At 548 feet high, the Philadelphia City Hall was the tallest skyscraper in the world when it was constructed and today it still holds the title of tallest load-bearing structure on the planet. The building took 30 years and 24 million dollars to complete. It was also the first (known) non-religious structure to hold the record for the world’s tallest building." Image 1 I read that the Mole Antonelliana in Turin, Italy shares the record with the exact same height. Image 2 Sources and more information:

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