Radio Barcelona was established in 1922 and began broadcasting in 1924 from the Hotel Colón in Barcelona. The station's antennas were located on top of Tibidabo and it was necessary to build a building for the machines, which Rubió i Tudurí was commissioned to do. However, we have to mention a problem with dates. Rubió himself attributes the start of the project in 1922. However, as Antonio Pizza specifies, the plans are dated from 1929. In his book ‘Dialogues on architecture’ from 1927, Rubió introduces the thought of Le Corbusier in Catalonia, a rationalism which is already reflected in this pavilion.

The Radio Barcelona station contains machines and transmitters, but also some rooms for visits and receptions that are reminiscent of Fritz Lang's Metropolis. This project and the 1934 Goldwin Meyer Metro building in Barcelona are two projects linked to the audiovisual world that express the modernity of these new technologies. However, throughout his career, Rubió worked interchangeably with various styles, depending on the demands of the assignment. He also developed various restorations and historicist proposals, such as the Monastery of Montserrat and the Convent of Pedralbes.

Building located on the Tibidabo mountain and is currently within the grounds of the Tibidabo Amusement Park. It is rectangular in plan and consists of a ground floor, a floor and a double-sided roof with the ridge parallel to the main façade.

On the main façade, a high wall acts as the plinth of the building and in the centre there is a large bronze relief by Àngel Tarrach; this relief was made as a tribute to the Republic and is accompanied by a plaque that says "Through this antenna Francesc Macià told the world that Catalonia was to become a Republic". Two stairs start from this central space towards the ends in opposite directions; the railing is a wall closed diagonally with a step in the middle.

Once at the top, the building is set back a little with respect to the closing wall of the plinth, creating a corridor between them; this is covered by a work canopy, located between the ground floor and the first floor, supported by smooth columns. On the ground floor there is a series of large rectangular windows, covered with a grill, which take up almost the entire wall. On the upper floor, the walls are made of bricks. The walls are plastered and painted white without any decoration.

Radio Barcelona was founded in 1922 by members of the National Radio Broadcasting Association Josep Maria de Guillén-Garcia i Gómez, Royston Saint Noble, Eduard Rifà i Anglada, Eduard Solà i Guardiola and Pau Llorens. It began broadcasting in 1924 from the dome of the Hotel Colón in Barcelona; the General Directorate of Communications assigned the station the reference EAJ-1 (codes referring to Spain, Wireless Telegraphy -AJ- and first authorised station).

The success achieved by the station made them acquire a more powerful team. In 1926 they bought a transmitter with 2 and a half kilowatts of power in the antenna and 10 kilowatts in the generator, which was the first of its kind in Europe; it was manufactured by International Western Electric of New York and was acquired from the company Teléfonos Bell, S.A., who installed this new device in Tibidabo, on land given by the Florida Hotel. At the same time, the studies changed places; the new location was in the Tívoli building (12 Casp Street).

Having the antennas in Tibidabo made it necessary to build a building for the machines and the project was entrusted to Nicolau Maria Rubió i Tudurí. Although the start of the project was attributed to him in 1922, Professor Antonio Pizza de Nanno in his Doctoral Thesis "Barcelona 1929-1936. Il Ponte incompinto dell'arditettura", defends that it actually dates from 1929, as it can be seen in the plans (where the date 1929 appears) and in the construction permit (processed on the same date).

The Barcelona Radio Pavilion contained machinery and transmitters, but also some rooms for receptions and visits. In the interiors, already lost, a clear influence of Adolf Loos could be observed.