Pablo Picasso's mural Guernica depicts a single horrific event: the April 1937 bombing of the Basque city of Gernika by Nazi Germany and fascist Italy, who were allied with nationalist Francisco Franco during Spain's Civil War. Today, the iconic painting is held by the Museo Reina in Madrid, Spain. The Reina Sofia recently published Rethinking Guernica, a powerful online exhibit about the history and significance of this painting. This exhibit incorporates 2,000 documents, which includes photographs, letters, newspaper clippings, manuscripts, and posters. Visitors may explore these documents in the stories section, where they are arranged by categories such as "artistic debate" and "borderless geography." The latter category documents the many locations where Guernica was displayed throughout the twentieth century. Alternatively, visitors may explore these documents by learning about key individuals (referred to as agents) connected to the paintings or chronologically.