I have been wanting to try my hand at building a case for a long time. When I was motivated enough to actually do it, I thought I should go all-out. This is the result.
The main features are that it is constructed from a frame of aluminium extrusions, with carbon fibre panels. The motherboard is rotated 90° (like a SilverStone Raven), and it has three 140mm intake fans. It's fairly quiet with the fans idling at ~300rpm, and they can keep the CPU cool under load at that speed, only needing to spin faster when the GPU is also working.
The CPU heatsink is a fanless Thermalright Macho Zero, which I am quite impressed with. I still have the stock cooler on the GPU (XFX R9 280X). I would like to replace it at some point, as it is by far the loudest part of the system, though it's not too bad for a stock cooler.
You can read a more extensive description on my website