Lécera town; view from the east
Exchange of prisoners of war following the Treaty of Lécera in 1939
Lécera is a municipality located in the Campo de Belchite comarca, province of Zaragoza, Aragon, Spain. According to the 2004 census (INE), the municipality has a population of 777 inhabitants.
Lécera is known for the Treaty of Lécera (Tratado de Lécera or Convenio de Segura) between Generals Cabrera and Van-Halen that led to an exchange of prisoners of war in the First Carlist War. 
Coordinates: 41°12′N 0°42′W / 41.200°N 0.700°W