Today this Crucifixion scene is spread across a winged altar, but it was probably originally a single panel, with the “frame” only painted on to it. Not long after it was created, however, the work was sawn into three parts, making the portraits of St. Mary Magdalene and St. Veronica wings of a triptych. Given its original condition, it makes van der Weyden’s artistic innovation even more significant: for the first time he unites all of the participants – the Crucifixion group, saints and the donors – in front of a continuous landscape, in which an idealised Jerusalem appears on the horizon. The realism of such a unified space had never been attempted in earlier works. Unknown today, the patrons are separated only by a conspicuous fissure in the ground from the central subject of religious contemplation, a concept that was so progressive that it was initially attenuated in the paintings of the period that followed.