Nothing quite stirs the emotions like walking into a gallery to see an original masterpiece.

Seeing that same piece on a digital screen may not have the same effect until now, but one Spanish group claims iPad art-viewing could give a greater insight than you might think.

Madrid’s famous gallery, Museo del Prado, has released an iOS app that allows you to peel away layers of famous paintings to uncover the intimate, and often frightening, secrets lurking beneath.