Here a few organic molecules and crystal structures drawn with the POV ray-tracing tool. The "building blocks" (atoms) are simple, but the arrangement in space of the bigger compounds is not straightforward. I had to review my geometry and trigonometry. And just in case you didn't guess, I am a chemist...
Click on each thumbnail to see the larger image and some comments.
Colour code of the atoms:

= C,

= H,

= O,

= N,

= Cl,

= S,

= P,

= Si,

= Metal.
The music, if you have clicked on the icon at the top, is J.S. Bach's cantata BVW172, aria N°4 (see my music page).