It is quite traditional to have a wooden roof decoration on top of some of the houses around here. They range from stark geometrical to elaborate, almost jugenstil-like creations. I usually walk past them without noticing.
I shot these today while strolling around in my home town. Camera was Pentax KP and the lens was the DA*550-135mm/f2.8
I used Darktable not only to do a straight conversion but also to benefit from its absolutely awesome perspective correction tool. Gimp was used for some spotting, cloning as well as a bit of levels/curves. Last was scripted GMIC with the sketch filter applied.