Chapel of el Oidor Monument · Alcalá de Henares, Cuenca del Henares, Madrid A family pantheon commissioned by Pedro Díaz de Toledo, a judge under Juan II, it is the oldest part of Santa María la Mayor; beneath its Gothic plasterwork stands the font in which Cervantes was baptised on 9 October 1547, moved here in 1905. Photo: Borjaanimal (CC BY-SA 4.0) What to see and do in Alcalá de Henares