Valle Alto del Lozoya
San Mamés forms a single municipality together with Navarredonda in the Community of Madrid. Its main activity has always been linked to the exploitation of its pastures and forests.
This village was built on settlements of Berber shepherds after the Reconquest next to the stream of El Chorro, named after the showy squirt that interrupts its course.
Among its heritage stands out the Church of San Mamés, founded in the eleventh century and where the coronation of Joan "La Loca" took place, first queen of Castile and Aragon. This church was practically destroyed during the Spanish Civil War.
Although both peoples have maintained judicial unity since the 19th century, it wasn't until 2001 that the municipality begins to be collectively referred to as Navarredonda and San Mamés.