Diagrams illustrating the Eiffel Tower and its proposed underground extension

The provided diagrams illustrate the geographical location of the Eiffel Tower within Paris and outline a design proposal to extend the monument underground. The map highlights the tower's position in the western part of the city, situated near the Seine River and the Ecole Militaire, while other landmarks like the Louvre and the Opera are located further east.

The second diagram details the physical specifications of the Eiffel Tower, which stands at a height of 324 metres and has a total weight of 10,100 tonnes. The structure features two distinct observation levels, with the first located at 57 metres and the second at 115 metres above the ground.

The proposed extension project involves creating a multi-level underground complex directly beneath the tower's base. This design incorporates a glass ceiling at ground level, which would allow natural light to penetrate the subterranean floors. The extension appears to consist of several levels, potentially providing additional space for visitors or facilities while maintaining the iconic silhouette of the tower above. Overall, the project represents a significant architectural intervention designed to increase the capacity of this historic site without altering its external appearance.