The Palacio de Cristal is one of the two smaller offices of the Reina Sofia and is located inside the Retiro Park.

The structure, made of iron and glass in a Victorian style, was originally conceived as a greenhouse for an exhibition, entitled Flora of the Philippine Islands, from 1887. After the exhibition, the building

it was the seat of the National Exhibition of Fine Arts, which is held every two years.

Since 1990 it has hosted specific projects and installations by artists

contemporary, highlighting among others those made by Doris Salcedo, Dominique Gonzalez-Foerster, Charles Ray or Hassan Khan.