Q.What was first used in the building of the golden gate bridge
A.The Golden Gate Bridge (1933) became the 1st construction site in history to require construction workers to wear hard hats, by order of Joseph Strauss.
A.7 wonders of the modern world: Empire State Building, Itaipu Dam, CN Tower, Panama Canal, Channel Tunnel, North Sea Protection Works, Golden Gate Bridge.
Q.When was the channel tunnel completed?
A.The Channel Tunnel was completed & officially opened in May 1994 after 7 years of construction work. It cost more to build than the Golden Gate Bridge.
Q.What are the 7 ancient wonders of the world?
A.7 Ancient Wonders: Pyramids, Babylon Hanging Gardens, Statue of Zeus, Temple of Artemis, Halicarnassus Mausoleum, Rhodes Colossus & Pharos of Alexandria.