Cárcel Modelo, also known as Cárcel Celular, was the main prison for men in Madrid at the turn of the 20th century. Located in the Moncloa-Aravaca district, it was inaugurated in 1884 after seven years of construction and replaced the 18th century Cárcel del Saladero. The name "Modelo" derived from its standing as a model for other Spanish prisons. The prison operated through 1939, when it was shuttered and demolished after being damaged during the Spanish Civil War.

• Cárcel Modelo massacre

41°22′58″N 2°08′35″E / 41.3829°N 2.1430°E / 41.3829; 2.1430