Found in the Plaza de España, emblematic site of the Ibero-American Exposition of 1929, and close to other constructions from the event such as the Pabellón Mudéjar (Mudéjar Pavilion), today the Museum of Art and Popular Customs (Museo de Artes y Costumbres Populares), the Archeological Museum, and the Pabellón Real (Royal Pavilion). The Regional Military Museum is heir to a large part of the Ancient Equestrian Artillery Society of Seville (Antigua Maestranza de Artillería de Sevilla) collection, to which elements of Military Firearms and other arms from different units, centers, and organizations of the Southern Military Region have been added. The Museum contains many different rooms. The Capitanía Room, in rememberance and hommage to this military institution, exhibits a collection of antique steel weapons from the 15th Century, as well as diverse firearms from Spain and other countries. The parapet and the crank harquebus (matchlock gun from the 15th Century) deserve special mention. The Adalid Room receives its name in memory of the Adalid, a war-time leader, a position in the Spanish militia that equaled what would later be the Field Master. In this room a money-storage box from the United States and a trunk from the 16th Century with an interesting security mechanism in perfect working condition are carefully kept. The Huestes and Mesnadas Room evokes the craftsmanship that served as a base for the first military industry. Diverse crafts such as carpentry, steel working, printing, chemical, electrical, etc. The Cuartel Maestre Avenue is the principal artery of the museum. Here two cannons from the era of Felipe V, authentic jewels of bronze melting are displayed. Admission is free.