Recently came back from Berlin where I tried to push myself to take pictures in both quantity and quality. The result weren't that bad! But after sorting the better photos there was a clear pattern: Low-light and symmetry. I don't think I took any images handheld under 1000 ISO
And over half of the better ones were pretty much symmetric. But it sort of fits! December is the darkest month of the year = low-light and Berlin is the capital in the "Ordnung muss sein"-country = symmetry
I'll post ten or so of the images here on DA shortly