Chronology of Construction
Development of a World Trade Center by the Port
Authority recommended by the Downtown-Lower Manhattan Association.
The Port Authority issued a report recommending establishment of a world trade center.
The World Trade Center’s architectural plan is unveiled.
Site excavation began.
Steel construction began.
The first tenant moved into the North Tower.
The first tenant moved into the South Tower.
The World Trade Center dedicated.
The 360-foot television mast on the North Tower that supports 10 main television antennas, many auxiliary antennas, and a master FM antenna begins transmissions.
February 26, 1993
First terrorist attack.
September 11, 2001
Collapse of the World Trade Center complex following terrorist attack.
Minoru Yamasaki Associates of Rochester Hills, Michigan and Emery Roth & Sons of New York designed the World Trade Center.
Skilling, Helle, Christiansen, Robertson, New York
The Port Authority of New York and New Jersey Engineering Department
Joseph R. Loring & Associates, New York
Jaros, Baum and Bolles, New York
Tishman Realty and Construction Company, New York