The Prado Museum in Madrid has open up a new exhibition called “Touch The Prado” that invites blind and partially sighted people to touch and feel some of the most famous paintings in the world. The visitors can’t touch the original paintings themselves but an extremely high-resolution 3-dimensional replica of each painting. The exhibit is the product of a new printing process called Didu, developed by the Spanish startup Estudios Durero, that produces physical objects like a 3D printer would, except using a completely different chemical process. The museum selected six masterpieces for the exhibit that include a version of the Mona Lisa by a pupil of Leonardo da Vinci; Goya’s “The Parasol”; a still life by van der Hamen; “Apollo in the Forge of Vulcan” by Velázquez; and “Noli Me Tangere,” Correggio’s painting of Christ meeting Mary Magdalene.