San Isidoro el Real

This church, before San Matías, was part of the college of San Matías built in the 16th century following the Jesuit construction scheme. The complex also consisted of the old schools (now the British Institute building) and a residence that was demolished in 1879 to build the meat market. Construction began in 1578 with money bequeathed by Doña Magdalena de Ulloa to create a Jesuit school and was completed in 1681. In 1770, as a consequence of the expulsion of the Jesuits, it became the current parish church of San Isidoro.

The church, in the Baroque style, has a rectangular floor plan with a single nave made up of four bays with interconnected side chapels, a high, aligned transept designed to receive the dome and a square chancel with two side sacristies.

The bays of the nave are separated by recessed pilasters and are covered with a barrel vault with lunettes, as are the side chapels and the arms of the transept, which is covered with a dome on pendentives and the chancel with a groin vault.

The plan and design of the first floor of the façade could be attributed to Juan de Tolosa.

The façade is structured in three parts, with the central part containing the main doorway framed by half-columns, entablature and split pediment.