A great bulk of the most important parks in Madrid are related to areas originally belonging to the royal assets (including El Pardo, Soto de Viñuelas, Casa de Campo, El Buen Retiro, la Florida and the Príncipe Pío hill, and the Queen's Casino). The other main source for the "green" areas are the '''' owned by the municipality (including the Dehesa de la Villa, the Dehesa de Arganzuela or Viveros).