The Puerta de Hierro university (public) hospital was relocated to Majadahonda from the western part of the city of Madrid into a newly built medical complex in 2009.

In 1812, during the War of Spanish Independence, Majadahonda was the site of a battle between the French and British troops which left the town in ruins.

Majadahonda abandoned agricultural activities, becoming a dormitory town for Madrid, and thus highly dependent upon the service sector.

Near Majadahonda, at Las Rozas (Geographical coordinates: 40°29'6"N 3°52'27"W), is the most powerful broadcasting station in Spain, which transmits the programs of RNE-1 (Radio Nacional de España) on 585 kHz at 600 kW.

Additionally, the town is well known for its sporting establishments, including a public indoor swimming pool (now closed since 2021), an athletics stadium, a golf course, and several padel, tennis and football facilities.