You'll love a picture of the first ever direct observation with a quantum microscope of an atom’s electron orbital — an atom's actual wave function!. An orbital structure is the space in an atom that’s occupied by an electron. Up to now scientists have never been able to actually observe the wave function.
For all the intriguing details read here: http://io9.com/the-first-image-ever-of-a-hydrogen-atoms-orbital-struc-509684901
And here: http://www.dailymail.co.uk/sciencetech/article-2331882/Atom-pictures-Never-seen-images-inside-atom-revealed-Dutch-scientists-impossible-photograph-inside-hydrogen-particle.html