An intense journey through the largest anti-aircraft shelter in Tortosa, where you can listen to the recreation of an air attack. We present with the support of documentation, audiovisuals and personal stories the reasons for its construction, the life of the city during the Civil War and the link of the writer Ernest Hemingway with Tortosa. Optional visit to the Franco monument of the Battle of the Ebro where we tell the turbulent history of the construction and existence of the symbol.