Observe the tower and talk about the reason why the tower is still.

The tower is a hollow steel structure with a height of 324 meters and a weight of 9000 tons. There are three platforms at an altitude of 57 meters, 1 15 meters and 274 meters for sightseeing. The fourth platform is at an altitude of 300 meters and has a weather station. There is an antenna on it, which is the Paris TV Center. There are elevators and 17 1 1 steps from the ground to the top of the tower. The tower adopts staggered structure and consists of four thick and thin towers, which form an angle of 75 degrees with the ground.

Tower, standing.

The tower is a hollow steel structure with a height of 324 meters and a weight of 9000 tons. There are three platforms at an altitude of 57 meters, 1 15 meters and 274 meters for sightseeing. The fourth platform is at an altitude of 300 meters and has a weather station. There is an antenna on it, which is the Paris TV Center. There are elevators and 17 1 1 steps from the ground to the top of the tower. The tower adopts staggered structure and consists of four thick and thin towers, which form an angle of 75 degrees with the ground.