When the Eiffel Tower was first built in 1889 for the World's Fair in Paris, France, it was the tallest structure in the world. It held that title for 42 years until it was overtaken by the Chrysler ...

Two of his senior engineers, Maurice Koechlin and Emile Nouguier, drafted the first version in 1884. At first, Eiffel wasn’t impressed by their sketches—he thought they looked too plain. But once ...

From Sydney Opera House to the Statue of Liberty, we discover what the world's biggest landmarks looked like when they were ...