The World Trade Center (WTC) was a complex in Lower Manhattan in New York City whose seven buildings were destroyed in 2001 in the September 11 terrorist attacks.
There is no doubt that the Sydney Opera House is his masterpiece. It is one of the great iconic buildings of the 20th century, an image of great beauty that has become known throughout the world.
The Eiffel Tower is a 19th century iron lattice tower located on the Champ de Mars in Paris that has become both a global icon of France and one of the most recognizable structures in the world.