7. One World Trade Center
The one WTC is a skyscraper of New York, United States. It was completed on July, 2013 but opened on November, 2014 after spending $3.8 billion USD. David Child’s and Daniel was the main architect and Tishman Construction was the main contractor of the building. Having an architectural height of 1776ft (541.3) it is the sixth tallest building among the buildings existing on earth. (m.c)