[sznio]

I don't think any of these buildings has the recognizability potential. I could recognize the Commission too since I see it on TV every day, but others are generic offices. The White House has a distinct shape. The Capitol has a distinct shape. The Pentagon absolutely has a distinct shape.

I don't think the ECB will ever be recognizable (or at least won't become recognized via exposure), since it's just a glass tower like thousands of others.