The Eiffel Tower is the tallest building in France composed of massive latticework structure. The Eiffel Tower is currently owned by the City of Paris and is used as a landmark for visitors on the Champ de Mars. The Eiffel Tower was built for the Paris Exposition of 1889 and named after its designer and engineer Gustave Eiffel. The tower was built as the entrance arch to the 1889 World's Fair. The tower stands 324 metres (1063 ft) tall, about the same height as an 81-storey building. The Eiffel tower was finished in 1889 and was nearly torn down 20 years later after its lease expired. However, it was kept because many thought its antenna for telegraphy would be useful. In 1910, it became part of the International Time Service. The Eiffel Tower is one of the most visited sites in all of the world. The Eiffel Tower has attracted over a quarter of a billion visits in its existence. The Eiffel Tower at night is one of the most beautiful attractions in the city and shines a golden color visible to most in Paris. Even today, the Eiffel Tower serves as a symbol of the beauty of Paris.