[3] The building was purchased by the Spanish State three years after the inauguration of the museum, in 1927.

[3] The overseeing institution and the entire collection of the Marquis was bequeathed to the Spanish State after the death of the former in 1942.

[2][3] The building, dating from the late 18th-century, consists of two stories plus an attic floor, which is not open to the public.

They include items related to the romantic writer Mariano José de Larra.

In November 2009, the Council of Ministers determined the renaming of the museum to Museo Nacional del Romanticismo.