ANSA is reporting:

"The hidden drawings which lie underneath one of Leonardo Da Vinci's most famous works were shown to the public for the first time in Florence this week .

A bloody battle scene, a clutch of figures rebuilding a ruin and even an elephant were all sketched by Leonardo in detail in the preparatory 'underdrawing' for his 'Adoration of the Magi' .

Yet in the version of the painting known to the world, in which much of the drawing is reproduced, none of these particular elements is visible.

I wish I would have heard about this before it happened, I am not sure exactly what "public" actually got to see it.