Church of Nuestra Señora de la Asunción de Móstoles Monument · Móstoles, Área Metropolitana, Madrid The church of Nuestra Señora de la Asunción, the oldest building in Móstoles and declared a Bien de Interés Cultural (Spain's highest level of heritage protection) in 1982, stands where a mosque once stood, of which the old minaret survives: on its base the present brick Mudéjar bell tower, some 26 metres tall, was raised in the thirteenth century, its upper section, housing the clock, already dating from the seventeenth or eighteenth century. Of the Christian church built by Muslim masons in the service of the church, the semicircular apse survives, with three bands of arcading, which for centuries housed the main chapel. Enlarged between the fifteenth and sixteenth centuries, its baptistery was built between 1850 and 1852, although the baptismal font dates from the time of the Catholic Monarchs. It presides over the old town, where the 1808 proclamation was signed. Photo: Zarateman (CC0) What to see and do in Móstoles