Eiffel Tower, France

The Eiffel Tower is one of the world’s most visited landmarks. It was built to show France’s industrial strength during the 1889 World’s Fair, and the original plan was to pull it down after 20 years. That was until Eiffel cleverly incorporated a radio antenna and wireless telegraph transmitter into the tower’s design. Later on, the tower was almost destroyed during World War II. The heat of the sun causes the iron of the tower to expand, making it grow a few centimetres during the summer months. A total of around 200 million people have visited the tower since its construction.

This tower ________.