"Cite de l'architecture et du patrimoine" in Paris has finally opened. It's definitely worth a visit. But be aware. They really really don't like when you use your camera!! http://www.citechaillot.fr/
Architect: Francisco Javier Sáenz de Oiza. The "Torres Blancas" Tower are from the late sixties, and was originally designed as two or three towers though only one was completed.
The "Mirador Residences" in Madrid, by Dutch Architects MVRDV. I played with legos when I was young, and i'm sure that the people from MVRDV did the same. The building is 21 floors high, and there 156 apartments.