The Torre Urquinaona is a rationalist work of Barcelona included in the Inventory of the Architectural Heritage of Catalonia.

Building designed by the architect Antoni Bonet Castellana and Benito Miró between 1968 and 1970. Bonet was a young member of the GATCPAC from 1933 until he went into exile in 1938. During this stage, he participated for a short period in Le Corbusier's workshop in France, and went to work in Argentina and Uruguay, until he returned to settle definitively in Barcelona in 1963.

It is a skyscraper, which with its 22 floors, is 70 meters high, a height that was allowed by urban regulations for this type of building during the term of office of mayor Josep Maria de Porcioles. It has an octagonal plan, resolving its location in a chamfer of the Eixample. The architects were influenced by American architecture: it is a building with a marked verticality, enhanced by asymmetrical prisms that follow the profile of the building. At the top, it has a "sculptural" composition, playing with the volumes, as a finishing touch to the building and breaks with the verticality so marked in this type of construction

Throughout the exterior, the architects clad the building in dark sandstone, to avoid the darkening that light colored materials suffer over the years due to pollution.