4. There’s a Military Bunker Underneath the Eiffel Tower
Below the South Pillar is a former military bunker! It connects to existing military tunnels, but the bunker itself today is used as a mini museum open to small tour groups.
3. There Was a Post Office in the Eiffel Tower
Visitors used to be able to send a postcard from La Poste and get it stamped with an Eiffel Tower postmark! Sadly, the post office closed in 2016.
