Which landmark was built for the 1889 World's Fair in Paris?

The Eiffel Tower was built for the 1889 World's Fair in Paris.

The fair, called the Exposition Universelle, marked the centennial of the French Revolution. Engineer Gustave Eiffel's company designed and constructed the iron tower on the Champ de Mars. It was completed in time for the exposition and reached 300 metres at its original height, making it the world's tallest man-made structure until the Chrysler Building in New York surpassed it in 1930.

The tower was assembled from more than 18,000 wrought-iron pieces joined by millions of rivets. Its open lattice design reduced wind resistance while allowing the structure to rise dramatically above Paris. Many artists and writers initially criticized its appearance, but it became popular with visitors and was eventually preserved.

The Eiffel Tower was intended to be temporary, with a planned lifespan of about 20 years. Its usefulness as a radio-telegraph station helped protect it from demolition. Today it is one of France's most recognizable landmarks and a defining symbol of Paris.