Eiffel tower is free to enter daily except Mondays. The opening times are 7am - 8pm. The palace is closed in September for an annual holiday. Guided tours start at the 7:00 am and close the guide when doesn't have visitors. Visitors may take photos in the tower, but can not take photos in the top. One event very important is when open the light and the tower becomes very beautifful. In the center of tower there is an inscription of one militar hero. This tower is my favourite building in the world.