I love urban photography, and although I don't know that this necessarily qualifies entirely as "abstract" it is one of my all time personal favorites - taken in a parking garage at sunset after most of the cars had left- it had rained earlier and oh! The way the light hit the tracks left behind.
Love pics like this! Makes me want to go out and find shots waiting to be found!!
Very nice. Upped. I discovered the contest via your feed, so thanks for the tip :) Here's my abstract entry: https://steemit.com/monomad/@thebigdelay/monomad-photo-contest-week-4-abstract-beneath-our-feet

i love the textures of this
noticing a photo opportunity like this takes a good eye, well done sir
Stunning shot, mate!
That is certainly abstract to me :) Upped and followed.
beautiful geometry and spot of light