Founded in 1974 by Daciano da Costa, Risco was initially directed to the development of projects of Industrial Design, Exhibition Design and Graphic Design. In 1984, Manuel Salgado takes the lead and starts to guide the workshop for the areas of Urban Planning and Architecture. In the two decades following the Risco produced works of major importance in the panorama of recent Portuguese architecture, like the Belém Cultural Center (in partnership with Vittorio Gregotti), Expo\'98 or Urban Project Antas. In 2007, with the departure of Manuel Salgado, Risco started the third round of their existence. A course under the coordination of architects Tomás Salgado, Nuno Lourenço, Carlos Cruz and Jorge Estriga. For this new cycle, Risco remained intact the earlier goals: to simultaneously building projects, urban projects and large equipment with the efficiency, quality and enthusiasm that characterize the path followed to date.