One of the most iconic pieces belonging to PIT is Pittsburgh, a mobile that was created by Alexander Calder in 1958. The piece originally hung in the 1952 airport but has traveled to exhibitions around the world in institutions such as the Guggenheim and Carnegie Museum of Art. It is considered an important and rare work by Calder due to its monumental size.

The color palette of this work is black and white, with the bars being black and shaped on the mobile being white. This work is hue, and hangs suspended from the ceiling. The overall shape created by this sculpture can be describes as leaf life and organic.