It is AMAZING how one monument can have so much to see! My advice is to not rush through your visit but take time to enjoy it all.
However, if you are like most people visiting Paris, you probably have so much to see but so little time. Here is a quick overview of each level so you can choose what fits your itinerary.
It seems impossible to visit Paris and not see the Eiffel Tower but if your schedule absolutely prevents you from visiting the other floors, there is still things to do around the base.
1.) There is post office at the South Pillar. Be sure to send yourself a postcard. A fun and inexpensive souvenir complete with a postal mark unique to the Eiffel Tower.
2.) A bust of Gustave Eiffel, the architect of the tower, is at the North Pillar.
3.) Although not part of the Eiffel Tower, a popular place to view the magnificence of the Grand Dame is at Place de Mars. Enjoy a lovely picnic with the Eiffel Tower as the main attraction.
A quick side note on floor names: in the United States, the 1st floor is the ground floor but in Paris, the 1st floor is what Americans would call the 2nd floor.
In October 2014, the 1st floor was reopened with a whole new exciting look. Re-constructed with some fun, new attractions including an interactive history of the tower and for the brave, an area with a glass floor to walk on!
Besides the amazing views of the city, there is also a souvenir shop and the Jules Verne restaurant.
The only way to get to this level is by taking the glass elevator. This level offers an even broader view of the city and on a clear day, you can see many of the other famous Parisian sites across the city. You can also visit Gustav Eiffel’s actual office and measure your height to get your exact altitude. Conclude your visit with a stop at the champagne bar.
Whether you have time to visit the entire monument or just explore the base, the Eiffel Tower is the one must visit icon of Paris.