World Trade Center is the original complex that once stood in New York from the start of construction in 1966 groundbreaking, until they were destroyed on September 11, 2001. The complex was opened to public on April 4, 1974; although some buildings were not built or completed yet at the time. It consisted of 7 buildings, the famous being were the twin towers that were once the world's tallest buildings for only 2 years when they were surpassed by Willis (Sears) Tower. Of course, these twin towers ended the Empire State Building's 40 year reign. The old 7 World Trade Center was the last building to be built in that complex, which was built in 1987 and the last building to fall on 9/11 about 7 hours after the North Tower (tower with antenna) fell. The North Tower (1 WTC) was 1,368 feet tall and 1,728 feet with the antenna, while the South Tower (2 WTC) was 1,362 feet tall. They were very famous and appeared in many movie films, they were also an icon of New York City.