The forecourt of the cathedral housed the Beauvais Tapestry Manufactory until World War II when the workshops were destroyed. To pay tribute to this heritage, André Malraux, Minister of Culture at the time, launched the creation of the National Gallery of Tapestry which was inaugurated in 1976.
This unique building in 20th century architecture, designed by architect André Hermant, was conceived as a succession of boxes to look at and stands as an "anti-monument" opposite the cathedral. The choice of a horizontal architecture magnifies the extraordinary verticality of the cathedral and highlights the remains of the Gallo-Roman walls inside which it was built. When it became the property of the city of Beauvais in 2013, its artistic and cultural program envolved to include all visual arts and the place was renamed "Le Quadrilatère".