[2] "La Granja" (Royal Palace of La Granja de San Ildefonso) is a royal palace and gardens built adjacent to the town in 1721-24.

[2] For the next two hundred years, La Granja was the court's main summer palace, until the Second Spanish Republic formed in 1931.

The royal site is part of the Patrimonio Nacional of Spain, which holds and maintains many of the Crown's lands and palaces.

It is a popular tourist attraction, with paintings, portraits, and a museum of Flemish tapestries.

On 12 August 1836 at La Granja palace, some of the Liberal leaders compelled Queen Christina to sign a decree restoring the Constitution of 1812.