The Eiffel tower is under public domain, and thus no person or company has a copyright to it.
HOWEVER! The lights installed at a later date ONTO the Eiffel Tower at still under a lasting copyright to their installer, and thus any picture that shows the Eiffel Tower at night (subsequently showing the lights) falls under the copyright and is illegal.
(((Thankfully, there are things like fair use. So you can't be jailed so long as you are not profiting off such a picture.)))
The Eiffel tower is under public domain, and thus no person or company has a copyright to it.
HOWEVER! The lights installed at a later date ONTO the Eiffel Tower at still under a lasting copyright to their installer, and thus any picture that shows the Eiffel Tower at night (subsequently showing the lights) falls under the copyright and is illegal.
(((Thankfully, there are things like fair use. So you can't be jailed so long as you are not profiting off such a picture.)))
I'm sure there's 25 thousand layers of legal nuance that I'm not aware of. Because there always is.