This has shades of yesterday's shot - quite by chance.
Brits and I hung out at the Barbican centre today for a catch up and stuff. Looking up at the ceiling, I saw a mass of squares and right-angles. Add the reflections and I had to make it today's photo.
It was a close run thing, there were some other photos I liked almost as much, but they were too similar to things I've already done recently or they weren't quite right so you'll just have to be patient.