Can't let a post like this go by without name-checking a couple of other sites:

Visual 6502 for taking such photos and then emulating, or should I say simulating, the cpu from the images - in JavaScript: http://visual6502.org/

Chipworks for commercial silicon analysis of big modern system on chips (source of some photos of recent apple silicon): http://www.chipworks.com/blog/technologyblog/2013/01/21/the-...