How much does an American cost?

Apparently 50 euros!!!!

An "americana", in this case is not an American girl. It refers to a blazer.

What you are seeing is an ad for H&M fashion stores, and the "americana" has nothing to do with this girl's long legs, but rather the blazer that the guy is sporting.

Weird Translation

It's a good thing I can understand Spanish, because this sign is totally confusing in English.

It should say something like:

Every Wednesday after 4pm, excluding holidays or the eves of holidays, admission will be free for European Union citizens.