Why do they keep showing the Eiffel tower in the trailer?

I've found multiple shots in the trailer where they've used the Eiffel tower, but not sure what it's hinting at, take a look:

http://imgur.com/a/97o9F

So essentially they have two different paintings of the Eiffel tower in their bunker and she's also wearing a shirt with an Eiffel tower. Let me know what you guys think, even though it may be a little early for assumptions.