1.  Visitors can see what they couldn't see in person, like David's furrowed brow and piercing eyes.

2.  Besides, we are concentrated on creating 3-D images of some of his most famous works so that the visitor could see the tool marks as well as the distortions.

3.  But for the computer imagines, visitors couldn't have seen the sculpture so clearly.

4.  Originally, visitors can't see even they come closely to it.