Run by the Spanish state agency Patrimonio Nacional, it is located in a new building above the gardens of the Campo del Moro park and next to the Almudena Cathedral and the Royal Palace.

[6] The works suffered delays due to the discovery of archaeological remains of the 9th-century Muslim settlement in its location.

The placement of these large pieces was a very complex task, for which a custom-made tool had to be created, which translated into a laying of the first stone as a decisive act.

[9] In October 2018, after a year of delays, a temporal cooperation of Empty, specialized in museography, and telecommunications company Telefónica won the public contest for the interior design and presentation of the museum and its collections.

[10] In June 2022, the Minister of the Presidency, Félix Bolaños, and the chairwoman of Patrimonio Nacional, Ana de la Cueva, announced that the museum would open in summer 2023 and be renamed the Royal Collections Gallery.