This gallery contains all the files I've uploaded to Wikipedia Commons so far. You're free to use it for whatever you want, just don't forget to attribute the pictures to me.
Daniel Tupý memorial
Sunset at the Daniel Tupý memorial (with the Bratislava castle in the background)
Side view of the Daniel Tupý memorial
Poem engraved into the memorial
Inscription on the memorial
The pedestal of the aforementioned inscription
Front view (a bit overexposed)
Front view (too dark for the statue to be seen :P)
Physics
Closeup on the ridges of a handheld fresnel lens.
Halogen lamp turned on
Picture of a biconvex lens whose image is upside-down and smaller than the original