Mr Slim felt it was important to donate this museum and his art collection of Mexican masters and European treasures because he felt that the majority of his country could not afford to travel to Europe to see these world treasures so he wanted to share it with them all. The six floors inside house the family collection and are divided by style and periods. My personal favorite was th 6th floor, home to all of the traditional Mexican masters. I enjoyed the Siqueiros mural, the walls of Orozco's and the Tamayo's.
The architecture of the 170 thousand sq foot structure was done by his son in law Fernando Romero at a cost of $ 70 million dollars. It has silver colored, aluminum hexagon tile exterior and no windows. It is a controversial site since so many people have opinions about it. But love it or hate it, the museum is a wondeful experience to all.
Add it to your list if you plan to be in Mexico City anytime soon.