The project approval was passed by the City Council of Madrid in 1968.

[3] The construction was temporarily halted by the City Council in April 1971 on behalf of the Ministry of Housing, on the basis of the complaints filed by the neighbours, who wanted the building to be tore down.

[4] A 26-floor concrete tower, reaching a 94-metre height, it became the highest residential building in the Spanish capital when it was finally opened in 1973.

[3] It has been noted as "an elaborated product of (Carvajal's) organicism".

[5] A controversial work,[5] it has been heavily criticised, particularly in terms of the visual impact it creates in the sight of the puerta de Alcalá from the plaza de Cibeles.