#  110 stories, 1353 feet (412 meters) tall
   (By some sources, Tower One was 1368 feet tall and Tower Two was 1362 feet. Some sources say 1350 feet overall.)
   #   About 10,000,000 square feet of rentable space, occupied by about 50,000 people.
   #   An acre of rentable space on each floor of each tower.
      (Gross area of 43200 square feet (4020 square meters) each per floor.)
      Owned and operated by the Port Authority of New York and New Jersey.

Observation deck, South Tower, WTC 2, floor 107 (summer hours 9:30am to 11:30pm).
Skylobbies on floors 44 and 78 served by high speed elevators.
Seven underground levels including services, shopping, and a subway station.
The two nine story Plaza Buildings, with roughly ell-shaped plans, flank the main entrance to the complex from Church Street, with WTC 4 on the south and WTC 5 on the north.

Groundbreaking for construction was on August 5th, 1966. Steel construction began in August 1968. First tenant occupancy of One WTC was December, 1970, and occupancy of Two WTC began in January 1972. Ribbon cutting was on April 4, 1973