Trivia: How tall is One World Trade Center?
Correct Answer: 1,776 feet
So why is this answer correct? : The total height of One World Trade Center in New York City, including the observation deck and antenna, is 1,776 feet, symbolic of the year that the Declaration of Independence was signed. Its height also makes it the tallest building in the Western Hemisphere. There are other forms of symbolism in its design, too — for example, its base is 200 square feet, the same as the original Twin Towers, which were destroyed during the September 11, 2001, terrorist attack..