The Eiffel Tower is one of the most famous structures in the world and symbol of France. It is named after the engineer Gustave Eiffel, whose company designed and built the tower. The tower was built in 1889 for the Universal Exhibition, held to commemorate the centennial of the French Revolution. For forty years after construction it was the tallest man-made structure in the world. The structure is largely composed of triangulated sections and is build using latticed wrought iron. The tower is 324 metres tall, about the same height as an 80-storey building. The tower has three levels for visitors, with restaurants on the first and second levels. It is possible to climb to the top, but there is about 1700 steps so most people use the lift.