1.1 The world trade center The World Trade Center is more than its signature twin towers: it is a complex of 7 buildings on 17 acres of land, constructed and operated by the port authority of New York and New Jersey. The towers rise at the heart of the complex, each climbing more than 100 feet higher than the silver mast of the Empire State Building• 1.1 The World Trade Center: • The World Trade Center is more than its signature twin towers: it is a complex of 7 buildings on 17 acres of land, constructed and operated by the Port Authority of New York and New Jersey. The towers rise at the heart of the complex, each climbing • more than 100 feet higher than the silver mast of the Empire State Building