The missing presence of the 168 killed in the Alfred P. Murrah Building bombing is marked by 168 chairs in a memorial park where the building once stood. Although the chairs are similar in overall appearance, each was individually handcrafted so no two chairs are exactly alike, and each is etched with the name of a victim who was killed.
Some chairs are small, representing the children who died.
The seat backs were cast from molten bronze and sit on bases made of glass. The glass bases house lighting mechanisms so that the chairs glow at night.