the foundation dug 70 ft deep into Manhattan's Bedrock anchors the tower firmly ensuring stability even in the harshest conditions each of the 71 elevators can travel from the ground floor to the observatory in just 47 seconds showcasing the technological marbles embedded within the combination of Steel frames and blast prooof concrete has redefined what it means to build a skyscraper making one World Trade Center not only a symbol of remembrance but a beacon of modern engineering one of the most distinctive features of the tower is its 48 ft Spire which was added in May 2013 the Spire serves as a broadcasting antenna and adds to the building's symbolic height ensuring it stands as the tallest structure in the Western Hemisphere the Spire itself is a nod to the original Twin Towers iconic antenna serving as a connection between the past and the future [Music]