Paris
The Eiffel Tower is the most famous sight in Paris, built by Gustave Eiffel in 1889 with  of iron — that means 18,000 pieces of iron and 2.5 million rivets. With a height of 300 meters, for a long time it was the highest tower in the world. Over 6 million people visit it every year. There are three levels that you can visit, and the highest one is 2nd above the ground. It was made for a fair, but the French government wanted to tear it down. With rising popularity, it stayed.