Follow the headline link, start zooming in. I’d start zooming in on the lips. At some point, the almost invisible cracks in the paint become crevasses in some alien landscape.

Once you’ve marveled at all that detail, tap the 3D button in the tool bar. Once the sample loads, zoom in some more and glide across the actual surface of the painting.

Some remarkable work here. To me, this goes well beyond the museum experience, brings an appreciation of a classic work in a way that is only possible on your device’s screen.