After processing of the HDR, I used Gimp to straighten all of the verticals and Digikam for its wonderful cross-processing look (color|auto-correction|equalize) which emphasizes the shinyness and various colors of the reflections.
The totally renewed city center around the central train station is full of curves, glass and great design tweaks.
I like #3 because it is so otherworldly (and pretentious as Apple hardware ). The air cushions remind me of a magnifying glass, giving me anxiety that people below the canopy might burn like ants. Lastly, the building face reminds me of shark teeth.