ANSWERS: 3
  • 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: http://weburbanist.com/2008/01/19/the-tallest-masonry-building-in-the-world-philadelphias-beautiful-load-bearing-city-hall/ http://en.wikipedia.org/wiki/List_of_tallest_buildings_and_structures_in_the_world

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