The original Two World Trade Center (also known as the South Tower, Tower 2, Building Two, Building B or 2 WTC) was one of the Twin Towers in the original World Trade Center complex in New York City. It was completed in 1972, stood at a height of 1,362 feet (415 m) to the roof, distinguishable from its twin, the North Tower (1 World Trade Center), by the absence of a television antenna. On the 107th floor of this building was a popular tourist attraction called "Top of the World Trade Center Observatories," and on the roof was an outdoor observation deck accessible to the public and a disused helipad at the center. The address of this building was 2 World Trade Center, with the WTC complex having its own ZIP code of 10048, due to its large size and popularity around the world.