On the occasion of the recent death of the madrilenian culture historian Vicente Cacho Viu, the authors expose the main lines of his historical work. They point out the importance of Cacho's research on the periord of the Restauración, mainly his studies on the liberal education institution Institución Libre de Enseñanza. They also consider Cacho's interest in Catalonia, remembering the time he spent teaching at Barcelona University, paying attention to his works on catalan modernisme. The article includes a systematic bibliography of Cacho's works.