Built on the same dates as the rest of the "Raspall block", the Iris tower shows a light and immaterial appearance thanks to the chromatic treatment spread over all the façades, based on white, cream and yellow tones. It follows the typology of the other holiday homes built by Raspall, with the vertical continuity reflected by the tower. In this case, Raspall is entertained in all the small-scale elements, such as the vaults of the balconies, covered with mosaic, or the bars of the railings, which trace very delicate patterns. The stone plinth extends to the base of the fence, showing a desire to cover all surfaces and generating a dreamlike and unrealistic image.

The Iris Tower (1910), despite the appearance of a single-family house, contains two houses connected by a staircase as if it were a tenement house. It consists of a semi-basement, ground floor, floor and attic, and a viewing terrace covered in brown and yellow glazed tiles, forming geometric patterns. The central body is covered with a roof on two sides with wide eaves on both sides. The facings under the eaves and the gables of the façades and the tower are sgraffito with geometric-floral designs. The wrought iron railings follow a similar decoration. The walls have an irregular stone plinth; the rest are stuccoed imitating limestone up to the first floor and smooth on the rest. Raspall continues to use semicircular arches and basket and elliptical or oval openings. On the ground floor and on the upper floor there is a set of stained-glass windows.

The "Mansana Raspall" is a unique set in the history of modernist architecture in our country: it consists of four isolated buildings, located on the same block of houses, built by the architect Manuel Joaquim Raspall between 1910 and 1913. The four buildings have an obvious stylistic unity, reinforced by the garden fences, which use the same language: irregular stone, mosaic and forge, all with sinuous lines. The Raspall Houses are very representative of the work of the first stage of this architect, who belongs to the second generation of modernist architects, and are the gateway to the long Passeig dels Plàtans, where there are the most modernist buildings important of the population.

The promoters of the Barbey and Barraquer houses were prominent members of the Barcelona bourgeoisie, who had them built as second homes. The Bombonera and the Iris Tower were built by Cecília Reig Argelagós, from La Garriga, who rented them out as a second residence.