Located in the Casa de Campo Exhibition Ground, this emblematic 20th century Madrid building, designed by the architects, José Antonio Corrales and Ramón Vázquez Molezún, stands out for being a perfect model of modular architecture and a paradigm for modern Spanish architecture, for which steel, glass, aluminium and brick has been used.  

Winner of the first Architecture Prize at the Brussels Universal Expo in 1958, beating one of the icons of the Belgian capital, the Atomium, this pavilion is made up of hexagons as a structural element.  The ensemble occupies a surface area of 3,020 m2 and is made up of 130 hexagons, whose layout is similar to inverted umbrellas which collect rainwater, supported by a shaft that facilitates its evacuation to a curious manhole that is also the foundations, and it is then taken to the sanitation network. 

A year after winning this award, the building was erected at the Casa de Campo exhibition ground, where it would host some of the famous fairs that were held biennially or triennially from the 1950s to the 1970s. Then, it lay abandoned for three decades.

It is now being refurbished with the intention of becoming an exhibition space again. To do so, current and classic techniques have come together to improve the features of the materials using contemporary technology.