Colegio Mayor de San Ildefonso

Corral de Comedias de Alcalá de Henares in Alcalá de Henares, Community of Madrid, Spain, is one of the oldest preserved theatres in Europe. Built in 1601–02 and designed to mirror the Corral de la Cruz in Madrid, the architect was Francisco Sánchez.It was built as a corral de comedias, a courtyard theatre. However, it is no longer an open-air theater, like the Corral de comedias de Almagro, having been given a roof in a rebuilding in 1769. Following use as a teatro romántico in the 19th century, and a cinema in the early 20th century, which led to major changes in the building's architecture, the building has been restored.

The University of Alcalá (Spanish: Universidad de Alcalá) is a public university located in Alcalá de Henares, a city 35 km (22 miles) northeast of Madrid in Spain and also the third-largest city of the region. It was founded in 1293 as a Studium Generale for the public, and was refounded in 1977. The University of Alcalá is especially renowned in the Spanish-speaking world for its annual presentation of the highly prestigious Cervantes Prize. The university currently enrolls 28,336 students, 17,252 of whom are studying for undergraduate degrees, who are taught by a teaching staff of 2,608 professors, lecturers and researchers belonging to 24 departments. The administrative tasks are carried out by the university's Administration and Services, comprising approximately 800 people.One of the university's campuses, located in the city center, is housed partly in historic buildings which were once used by the Complutense University of Madrid, which was located in Alcalá from its medieval origins until it was moved to Madrid in 1836.

The Irish College of San Jorge at Alcalá de Henares, was founded about 1648, from the estate of Baron George Sylveira (Baron Jorge de la Paz y Silveira), a Portuguese nobleman, related to the McDonnells of Ulster through his mother. After the baron died, his widow Beatriz Silveira implemented his wishes and the College came into existence. Alcalá de Henares is a town to the northeast of Madrid, where the Complutense University was situated. The college and its chapel were dedicated to St. George, and were formally known as the Royal Irish College of St. George the Martyr, Alcala (Spanish: Real Colegio de San Jorge Myrtir de los Irlandeses). Students would study for seven years, Theology and Arts with the college was affiliated to the Complutense University of Madrid (which moved to Madrid, eventually reopening a branch in Alcala as the University of Alcalá), aimed at training clerics for Ireland, Belgium(Flanders) and The Netherlands. The Irish Franciscan Luke Wadding, O.F.M. wrote the statutes for the college. The first rector of the college was Rev. Godfrey Daniel.In 1767 following the expulsion of the Jesuits, an attempt was made to merge the Royal Scots College in Madrid with the Irish College at Alcala, and the assets of the Scots college were transferred to the Irish College by Royal decree. This merger was annulled by decree in 1771 and the Royal Scots College re-established at Valladolid.

The Palace Laredo (Spanish: Palacete Laredo) is a palace located in Alcalá de Henares, Spain. It was declared Bien de Interés Cultural in 1975.

The Hermitage of San Isidro (Spanish: Ermita de San Isidro) is a hermitage located in Alcalá de Henares, Spain. It was declared Bien de Interés Cultural in 1995.

The Regional Archaeological Museum (Spanish: Museo Arqueológico Regional; MAR) or Archaeological Museum of the Community of Madrid is an archaeological museum in Alcalá de Henares, Spain, dependent on the regional administration of the Community of Madrid.

The Diocese of Alcalá de Henares (Latin: Compluten(sis)) is a Latin Church ecclesiastical territory or diocese of the Catholic Church in Spain. Its episcopal see is Alcalá de Henares. The diocese is a suffragan in the ecclesiastical province of the metropolitan Archdiocese of Madrid.

The Archiepiscopal Palace of Alcalá de Henares (Spanish: Palacio Arzobispal de Alcalá de Henares) is a palace located in Alcalá de Henares, in the Community of Madrid, Spain. It is now home to the Diocese of Alcalá de Henares. It is located in the Plaza del Palacio and this form part of the monumental set declared World Heritage Site by UNESCO.The building complex dates from 1209. Two thirds were destroyed in a devastating fire in 1939, during the Spanish Civil War. The part of the building which is preserved is what is left intact after the 1939 fire, the damaged parts were not restored.In this building came to reside different Castilian monarchs, were held synods and councils, and in here were born the youngest daughter of the Catholic Monarchs and future queen of England, Catherine of Aragon, and the German Emperor Ferdinand, son of Joanna "the Mad". In addition, it is famous for being the place where the first meeting between the Catholic Monarchs and Christopher Columbus was held.

The Cathedral of St Justus and St Pastor in Alcalá de Henares (Spanish: Catedral de los Santos Niños Justo y Pastor de Alcalá de Henares) is a Roman Catholic cathedral located in Alcalá de Henares, Spain. It was declared Bien de Interés Cultural in 1904. The Carrillo archbishop (1446-1482), elevated the church to the rank of collegiate church. The current building was designed during the time of Cardinal Cisneros (1495-1517) he was awarded the title of "Master" and the current building was designed and constructed between 1497 and 1515 in late Gothic style typical of the age. The tower was built between 1528 and 1582. In 1904 the cathedral was declared a National Monument. During the Spanish Civil War (1936-1939) the church was burned losing virtually all its treasures, saving some bars and some chairs from the old choir. In 1991 the diocese of Alcalá restored and elevated to the status of cathedral-master, the Diocese Complutense recovering that which was from the 5th century until 1099.

Alcalá de Henares is a railway station serving the city of Alcalá de Henares in the Community of Madrid, Spain. It is on the Madrid–Barcelona railway and is owned by Adif. The station is served by Cercanías Madrid lines C-2 and C-7.

The Palacio Arzobispal is the residence of the Roman Catholic Archbishop of Manila located in Intramuros, Manila. The Archiepiscopal Palace of Manila was established as one of the five episcopal palaces in the Philippines.

St. Ignatius of Loyola College (Spanish: Colegio San Ignacio) is a private Catholic primary and secondary school and vocational training college, located in Alcalá de Henares, Madrid, Spain. The school was founded by the Society of Jesus in 1953.