The original World Trade Center was a seven-building complex in Lower Manhattan, built between 1966 and 1975, dedicated on April 4, 1973, and designed by architect Minoru Yamasaki, with the project championed by David Rockefeller and signed into law by his brother, Governor Nelson Rockefeller. Its iconic 110-story Twin Towers were the tallest buildings in the world upon completion (North Tower at 1,368 ft, South Tower at 1,362 ft), symbolizing American economic power and becoming a pop culture icon, featured in 472 films and the site of Philippe Petit's tightrope walk in 1974. The complex survived a fire in 1975, a bombing in 1993, and a bank robbery in 1998, but was destroyed on September 11, 2001, when al-Qaeda hijackers flew two Boeing 767s into the towers, causing both to collapse and killing 2,606 people in and around the towers plus all 157 on the planes. The cleanup took eight months, with the last piece of steel ceremonially removed on May 30, 2002, as the surrounding buildings were demolished or collapsed from the debris. A new complex has risen in its place, featuring a memorial with two reflecting pools marking the towers' footprints, and One World Trade Center, which at 1,776 feet is the tallest building in the Western Hemisphere.