A focus on the First City Tower in Houston, Texas.
I took it with my old gear (APS-C with a 55-200mm kit lens) from the floor, during my first trip to the US in 2018.
Straightening it in post and black-and-white conversion allowed to get an even more geometry-focused picture. This is one of the few pictures I printed to decorate my home, and I still like it.
In addition to the overall geometry, paradoxically, the repetitiveness of the windows emphasizes the variations between them: while you keep looking at the picture, you might start getting driven to unique features, repeated patterns, etc. (A bit like Niele Toroni's n`50 paintbrush imprints.)