The Complutense University of Madrid (, "Universidad de Madrid", "Universidad Central de Madrid"; ) is a public research university located in Madrid. Founded in Alcalá in 1293 (before relocating to Madrid in 1836), it is one of the oldest universities in the world. It enrolls over 86,000 students, being the 3rd largest non-distance European university by enrollment, and consistently ranking among the top universities in Spain, together with the University of Barcelona, Pompeu Fabra University, Autonomous University of Madrid and UAB. It is located on a sprawling campus that occupies the entirety of the Ciudad Universitaria district of Madrid, with annexes in the district of Somosaguas in the neighboring city of Pozuelo de Alarcón. It is named after the ancient Roman settlement of Complutum, now an archeological site in Alcalá de Henares, just east of Madrid.