The Metal Earth models are amazingly detailed etched models that are fun and satisfying to assemble. Each model starts out as 4 inch square metal sheets and you simply pop out the pieces using wire cutters and follow the included directions to assemble your model. The One World Trade Center in New York City is the tallest building in the United States and among the tallest in the world with its radio antenna reaching a symbolic height of 1,776 feet in reference to the year of American independence. The building includes office space, an observation deck, world-class restaurants plus broadcast and antennae facilities and stands as a memorial to those who lost their lives September 11th, 2001. The model is 3.9x1.4x1.4 inches when built. Difficulty level: Easy. No glue or solder needed.