"Castejón de las Armas es un municipio de España, en la provincia de Zaragoza, comunidad autónoma de Aragón. Tiene un área de 16,09 km²."
"Castejón de las Armas is a municipality located in the province of Zaragoza, Aragon, Spain. The River Piedra joins the Jalón here. According to the 2004 census (INE), the municipality has a population of 99 inhabitants."