The Eiffel Tower itself has three floors for visitors to explore: the first level, the second level, and the very top called the summit. The ground level surrounding the tower is the Esplanade.
The Esplanade: A free-to-access area where you can begin your Eiffel Tower adventure.
First floor stairs: 347
Elevator access: Yes
Second floor stairs: 674
Elevator access: Yes
Summit stairs: 1665 (only accessible to maintenance staff)
Elevator access: Yes (from the 2nd floor)