The Oratorio de San Felipe Neri is the Baroque church in which Spain's Cortes met from 24 February 1811 until 25 September 1813, in the old town of Cádiz. The Constitution that came out of those sessions, nicknamed La Pepa, was promulgated on 19 March 1812 and repealed by Ferdinand VII in 1814. If you want to understand why Cádiz sits at the centre of Spanish liberal history, this is the room.
It is also a handsome building in its own right, with an oval nave that is unusual for the city. The city council's tourism page lists weekday and Saturday opening hours and a €5 general ticket, set out under Visiting below.
A Baroque church on an ellipse
The oratory is a Baroque church on an elliptical plan, built between 1685 and 1719 and credited to Blas Díaz. Around the oval run seven rectangular chapels, each with a barrel vault and rich decoration. The dome did not last: the 1755 Lisbon earthquake ruined it, and it was rebuilt in 1764 by the master Pedro Luis Gutiérrez de San Martín, known as Pedro Afanador.
Over the high altar stands a rococo retable that includes an Immaculate Conception credited to Murillo. Treat the attribution as the traditional one rather than a settled fact; the church is better enjoyed for its plan and its chapels than as a Murillo stop.
Check the day before you walk over
The council lists visiting Monday to Saturday only: Sunday is Mass only and public holidays are closed. Last entry is 30 minutes before closing, so on a weekday arrive by 15:30.
Where the Cortes sat
Between 1810 and 1814 the Cortes counted 702 deputies. Four of the leading figures were Agustín Argüelles, Juan Nicasio Gallego, Antonio Capmany and the Conde de Toreno. Their work ended abruptly when Ferdinand VII repealed the Constitution in 1814, though it returned in 1820 to 1823 and briefly in 1836.
Outside, plaques on the exterior pilasters honour the deputies of 1812, the doceañistas. They are readable from the street at any hour, which makes them the easy part of the visit.
The Constitution's influence travelled: it shaped Portuguese constitutional ideas, the emergence of the Italian state and several American countries. More recently, a procedure has been opened under the 2022 Democratic Memory Law to declare the Oratorio, together with the Cortes monument in Cádiz, a lugar de memoria.
Visiting
The Oratorio stands in the old town, a short walk from Cádiz Cathedral and the neighbouring Oratorio de la Santa Cueva, so it combines easily with a morning in the Casco Antiguo. For the other end of the old town's story, the Puerta de Tierra is the surviving land gate.
The city council's tourism page lists the Oratorio open Monday to Friday from 10:30 to 16:00 (last entry 15:30) and Saturday from 10:00 to 14:00 (10:30 to 14:00 in July and August, last entry 13:30). On Sunday it lists only Mass, from 12:00 to 13:00, and it is closed on public holidays. A general ticket costs €5, €4 for over-65s, under-25s and people with a disability below 60%, and €3 per person for groups of more than 15. Children under 12 go free, and a free slot runs Monday to Thursday from 9:30 to 10:30, requested through cadizsacra.es.