Completed earlier this year, this library in Mexico City was designed by architects Fernanda Canales and arquitectura 911sc. The original house has been wrapped in concrete and glass to create an entirely new structure. The tree that stood out the front of the old house now sits in the entrance atrium of the new library.
Photographs by Sandra Pereznieto for De Zeen Magazine.
The Secret Garden 
I HAVE BLOGGED ABOUT THIS BEAUTY TOO:
http://concretedesignblog.com/2013/04/15/elena-garro-cultural-center/
It’s a remarkable building!